diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index 18e1367b6..f04101065 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -40,7 +40,7 @@
         android:backupAgent=".HabitsBackupAgent"
         android:icon="@mipmap/ic_launcher"
         android:label="@string/main_activity_title"
-        android:theme="@style/AppBaseTheme"
+        android:theme="@style/AppBaseThemeDark"
         android:supportsRtl="true">
 
         <meta-data
diff --git a/app/src/main/java/org/isoron/uhabits/helpers/ListHabitsHelper.java b/app/src/main/java/org/isoron/uhabits/helpers/ListHabitsHelper.java
index e66ae4e5a..f52dc5b4d 100644
--- a/app/src/main/java/org/isoron/uhabits/helpers/ListHabitsHelper.java
+++ b/app/src/main/java/org/isoron/uhabits/helpers/ListHabitsHelper.java
@@ -20,7 +20,6 @@
 package org.isoron.uhabits.helpers;
 
 import android.content.Context;
-import android.graphics.Color;
 import android.graphics.Typeface;
 import android.view.LayoutInflater;
 import android.view.View;
@@ -37,8 +36,7 @@ import java.util.GregorianCalendar;
 
 public class ListHabitsHelper
 {
-    public static final int INACTIVE_COLOR = Color.rgb(200, 200, 200);
-    public static final int INACTIVE_CHECKMARK_COLOR = Color.rgb(230, 230, 230);
+    private int inactiveColor;
 
     private final Context context;
     private final HabitListLoader loader;
@@ -49,6 +47,7 @@ public class ListHabitsHelper
         this.context = context;
         this.loader = loader;
 
+        inactiveColor = UIHelper.getStyledColor(context, R.attr.inactiveCheckmarkColor);
         fontawesome = Typeface.createFromAsset(context.getAssets(), "fontawesome-webfont.ttf");
     }
 
@@ -95,7 +94,7 @@ public class ListHabitsHelper
     public int getActiveColor(Habit habit)
     {
         int activeColor = habit.color;
-        if(habit.isArchived()) activeColor = INACTIVE_COLOR;
+        if(habit.isArchived()) activeColor = inactiveColor;
 
         return activeColor;
     }
@@ -129,12 +128,12 @@ public class ListHabitsHelper
             if (score < Score.HALF_STAR_CUTOFF)
             {
                 tvStar.setText(context.getString(R.string.fa_star_o));
-                tvStar.setTextColor(INACTIVE_COLOR);
+                tvStar.setTextColor(inactiveColor);
             }
             else if (score < Score.FULL_STAR_CUTOFF)
             {
                 tvStar.setText(context.getString(R.string.fa_star_half_o));
-                tvStar.setTextColor(INACTIVE_COLOR);
+                tvStar.setTextColor(inactiveColor);
             }
             else
             {
@@ -156,13 +155,13 @@ public class ListHabitsHelper
 
             case 1:
                 tvCheck.setText(R.string.fa_check);
-                tvCheck.setTextColor(INACTIVE_CHECKMARK_COLOR);
+                tvCheck.setTextColor(inactiveColor);
                 tvCheck.setTag(R.string.toggle_key, 1);
                 break;
 
             case 0:
                 tvCheck.setText(R.string.fa_times);
-                tvCheck.setTextColor(INACTIVE_CHECKMARK_COLOR);
+                tvCheck.setTextColor(inactiveColor);
                 tvCheck.setTag(R.string.toggle_key, 0);
                 break;
         }
@@ -175,7 +174,7 @@ public class ListHabitsHelper
         else
         {
             if (android.os.Build.VERSION.SDK_INT >= 21)
-                view.setBackgroundResource(R.drawable.ripple_white);
+                view.setBackgroundResource(R.drawable.ripple);
             else view.setBackgroundResource(R.drawable.card_background);
         }
     }
diff --git a/app/src/main/java/org/isoron/uhabits/helpers/UIHelper.java b/app/src/main/java/org/isoron/uhabits/helpers/UIHelper.java
index 8a708f1a3..e9b178525 100644
--- a/app/src/main/java/org/isoron/uhabits/helpers/UIHelper.java
+++ b/app/src/main/java/org/isoron/uhabits/helpers/UIHelper.java
@@ -22,6 +22,7 @@ package org.isoron.uhabits.helpers;
 import android.content.Context;
 import android.content.SharedPreferences;
 import android.content.res.Resources;
+import android.content.res.TypedArray;
 import android.graphics.Typeface;
 import android.os.Build;
 import android.os.Debug;
@@ -170,4 +171,14 @@ public abstract class UIHelper
         return context.getResources().getDisplayMetrics().widthPixels;
     }
 
+    public static int getStyledColor(Context context, int attrId)
+    {
+        int[] attrs = new int[]{ attrId };
+        TypedArray ta = context.obtainStyledAttributes(attrs);
+        int color = ta.getColor(0, 0);
+        ta.recycle();
+
+        return color;
+    }
+
 }
diff --git a/app/src/main/java/org/isoron/uhabits/views/HabitScoreView.java b/app/src/main/java/org/isoron/uhabits/views/HabitScoreView.java
index 4e1ae4c7c..a2c84fa4b 100644
--- a/app/src/main/java/org/isoron/uhabits/views/HabitScoreView.java
+++ b/app/src/main/java/org/isoron/uhabits/views/HabitScoreView.java
@@ -32,6 +32,7 @@ import android.util.AttributeSet;
 import org.isoron.uhabits.R;
 import org.isoron.uhabits.helpers.ColorHelper;
 import org.isoron.uhabits.helpers.DateHelper;
+import org.isoron.uhabits.helpers.UIHelper;
 import org.isoron.uhabits.models.Habit;
 import org.isoron.uhabits.models.Score;
 
@@ -74,6 +75,7 @@ public class HabitScoreView extends ScrollableDataView implements HabitDataView
     private boolean isBackgroundTransparent;
     private int bucketSize = 7;
     private int footerHeight;
+    private int backgroundColor;
 
     public HabitScoreView(Context context)
     {
@@ -123,7 +125,8 @@ public class HabitScoreView extends ScrollableDataView implements HabitDataView
         else
         {
             textColor = Color.argb(64, 0, 0, 0);
-            dimmedTextColor = Color.argb(16, 0, 0, 0);
+            dimmedTextColor = UIHelper.getStyledColor(getContext(), R.attr.fadedTextColor);
+            backgroundColor = UIHelper.getStyledColor(getContext(), R.attr.cardBackgroundColor);
         }
     }
 
@@ -345,7 +348,7 @@ public class HabitScoreView extends ScrollableDataView implements HabitDataView
     private void drawMarker(Canvas canvas, RectF rect)
     {
         rect.inset(baseSize * 0.15f, baseSize * 0.15f);
-        setModeOrColor(pGraph, XFERMODE_CLEAR, Color.WHITE);
+        setModeOrColor(pGraph, XFERMODE_CLEAR, backgroundColor);
         canvas.drawOval(rect, pGraph);
 
         rect.inset(baseSize * 0.1f, baseSize * 0.1f);
@@ -353,7 +356,7 @@ public class HabitScoreView extends ScrollableDataView implements HabitDataView
         canvas.drawOval(rect, pGraph);
 
         rect.inset(baseSize * 0.1f, baseSize * 0.1f);
-        setModeOrColor(pGraph, XFERMODE_CLEAR, Color.WHITE);
+        setModeOrColor(pGraph, XFERMODE_CLEAR, backgroundColor);
         canvas.drawOval(rect, pGraph);
 
         if(isBackgroundTransparent)
diff --git a/app/src/main/java/org/isoron/uhabits/views/HabitStreakView.java b/app/src/main/java/org/isoron/uhabits/views/HabitStreakView.java
index 37d2e16c9..4e21b0934 100644
--- a/app/src/main/java/org/isoron/uhabits/views/HabitStreakView.java
+++ b/app/src/main/java/org/isoron/uhabits/views/HabitStreakView.java
@@ -29,6 +29,7 @@ import android.view.View;
 
 import org.isoron.uhabits.R;
 import org.isoron.uhabits.helpers.ColorHelper;
+import org.isoron.uhabits.helpers.UIHelper;
 import org.isoron.uhabits.models.Habit;
 import org.isoron.uhabits.models.Streak;
 
@@ -150,7 +151,7 @@ public class HabitStreakView extends View implements HabitDataView
             colors[2] = Color.argb(192, red, green, blue);
             colors[1] = Color.argb(96, red, green, blue);
             colors[0] = Color.argb(32, 0, 0, 0);
-            textColor = Color.argb(64, 0, 0, 0);
+            textColor = UIHelper.getStyledColor(getContext(), R.attr.fadedTextColor);
         }
     }
 
diff --git a/app/src/main/java/org/isoron/uhabits/views/RingView.java b/app/src/main/java/org/isoron/uhabits/views/RingView.java
index 0d63ff958..8ab1c4fce 100644
--- a/app/src/main/java/org/isoron/uhabits/views/RingView.java
+++ b/app/src/main/java/org/isoron/uhabits/views/RingView.java
@@ -51,6 +51,7 @@ public class RingView extends View
     private float maxDiameter;
     private float textSize;
     private int fadedTextColor;
+    private int backgroundColor;
 
     public RingView(Context context)
     {
@@ -97,7 +98,8 @@ public class RingView extends View
         pRing.setColor(color);
         pRing.setTextAlign(Paint.Align.CENTER);
 
-        fadedTextColor = getResources().getColor(R.color.fadedTextColor);
+        backgroundColor = UIHelper.getStyledColor(getContext(), R.attr.cardBackgroundColor);
+        fadedTextColor = UIHelper.getStyledColor(getContext(), R.attr.fadedTextColor);
         textSize = getResources().getDimension(R.dimen.smallTextSize);
 
         rect = new RectF();
@@ -139,7 +141,7 @@ public class RingView extends View
         pRing.setColor(Color.argb(255, 230, 230, 230));
         canvas.drawArc(rect, 360 * percentage - 90 + 2, 360 * (1 - percentage) - 4, true, pRing);
 
-        pRing.setColor(Color.WHITE);
+        pRing.setColor(backgroundColor);
         rect.inset(thickness, thickness);
         canvas.drawArc(rect, -90, 360, true, pRing);
 
diff --git a/app/src/main/res/drawable-v21/ripple_white.xml b/app/src/main/res/drawable-v21/ripple.xml
similarity index 93%
rename from app/src/main/res/drawable-v21/ripple_white.xml
rename to app/src/main/res/drawable-v21/ripple.xml
index 5721b50cb..18e2c0fb9 100644
--- a/app/src/main/res/drawable-v21/ripple_white.xml
+++ b/app/src/main/res/drawable-v21/ripple.xml
@@ -20,5 +20,5 @@
 <ripple xmlns:android="http://schemas.android.com/apk/res/android"
         android:color="?android:colorControlHighlight">
 
-    <item android:drawable="@color/white" />
+    <item android:drawable="?attr/cardBackgroundColor" />
 </ripple>
\ No newline at end of file
diff --git a/app/src/main/res/layout/about.xml b/app/src/main/res/layout/about.xml
index de0ba9a23..d9267e95e 100644
--- a/app/src/main/res/layout/about.xml
+++ b/app/src/main/res/layout/about.xml
@@ -21,7 +21,7 @@
 <ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
             android:layout_width="fill_parent"
             android:layout_height="fill_parent"
-            android:background="@color/windowBackground"
+            android:background="?windowBackgroundColor"
             android:fillViewport="true">
 
     <LinearLayout
diff --git a/app/src/main/res/layout/list_habits_fragment.xml b/app/src/main/res/layout/list_habits_fragment.xml
index 39c68a713..729a68a6e 100644
--- a/app/src/main/res/layout/list_habits_fragment.xml
+++ b/app/src/main/res/layout/list_habits_fragment.xml
@@ -31,10 +31,10 @@
         dslv:sort_enabled="true"
         dslv:track_drag_sort="false"
         android:layout_width="match_parent"
-        android:background="@color/windowBackground"
+        android:background="?windowBackgroundColor"
         android:paddingTop="@dimen/checkmarkHeight"
         android:layout_height="match_parent"
-        android:divider="@color/windowBackground"
+        android:divider="?windowBackgroundColor"
         android:dividerHeight="1dp"/>
 
     <LinearLayout
diff --git a/app/src/main/res/layout/list_habits_header_check.xml b/app/src/main/res/layout/list_habits_header_check.xml
index aa817097c..2a1ef1fb6 100644
--- a/app/src/main/res/layout/list_habits_header_check.xml
+++ b/app/src/main/res/layout/list_habits_header_check.xml
@@ -25,7 +25,7 @@
     android:layout_width="20dp"
     android:layout_height="20dp"
     android:background="@color/transparent"
-    android:textColor="@color/fadedTextColor"
+    android:textColor="?fadedTextColor"
     android:textAllCaps="true"
     android:textStyle="bold"
     android:textSize="10sp"/>
diff --git a/app/src/main/res/layout/show_habit.xml b/app/src/main/res/layout/show_habit.xml
index 8b95cb9e1..ebcbe5ce7 100644
--- a/app/src/main/res/layout/show_habit.xml
+++ b/app/src/main/res/layout/show_habit.xml
@@ -22,7 +22,7 @@
             xmlns:tools="http://schemas.android.com/tools"
             android:layout_width="fill_parent"
             android:layout_height="wrap_content"
-            android:background="@color/windowBackground"
+            android:background="?windowBackgroundColor"
             android:fillViewport="true">
 
     <LinearLayout
diff --git a/app/src/main/res/values-v21/styles.xml b/app/src/main/res/values-v21/styles.xml
index ed72eef03..ea988b127 100644
--- a/app/src/main/res/values-v21/styles.xml
+++ b/app/src/main/res/values-v21/styles.xml
@@ -20,15 +20,42 @@
 <resources>
 
     <style name="AppBaseTheme" parent="android:Theme.Material.Light.DarkActionBar">
-        <item name="android:textColor">#606060</item>
-        <item name="android:colorPrimary">@color/primary</item>
-        <item name="android:colorPrimaryDark">@color/primary_darker</item>
         <item name="android:dialogTheme">@style/MyDialogStyle</item>
         <item name="android:alertDialogTheme">@style/MyDialogStyle</item>
         <item name="android:windowContentTransitions">true</item>
         <item name="android:windowAllowEnterTransitionOverlap">true</item>
         <item name="android:windowAllowReturnTransitionOverlap">true</item>
         <item name="android:spinnerItemStyle">@style/dialogFormSmallText</item>
+
+        <item name="android:colorPrimary">@color/blue_grey_800</item>
+        <item name="android:colorPrimaryDark">@color/blue_grey_900</item>
+        <item name="cardBackgroundColor">@color/white</item>
+        <item name="windowBackgroundColor">@color/grey_200</item>
+        <item name="headerBackgroundColor">@color/grey_200</item>
+
+        <item name="android:textColor">#606060</item>
+        <item name="fadedTextColor">@color/grey_600</item>
+        <item name="inactiveCheckmarkColor">@color/grey_600</item>
+        <item name="secondaryTextColor">@color/grey_800</item>
+    </style>
+
+    <style name="AppBaseThemeDark" parent="android:Theme.Material">
+        <item name="android:dialogTheme">@style/MyDialogStyleDark</item>
+        <item name="android:alertDialogTheme">@style/MyDialogStyleDark</item>
+        <item name="android:windowContentTransitions">true</item>
+        <item name="android:windowAllowEnterTransitionOverlap">true</item>
+        <item name="android:windowAllowReturnTransitionOverlap">true</item>
+
+        <item name="android:colorPrimary">@color/grey_900</item>
+        <item name="android:colorPrimaryDark">@color/black</item>
+        <item name="cardBackgroundColor">@color/grey_800</item>
+        <item name="windowBackgroundColor">@color/grey_850</item>
+        <item name="headerBackgroundColor">@color/grey_875</item>
+
+        <item name="android:textColor">@color/grey_50</item>
+        <item name="fadedTextColor">@color/grey_500</item>
+        <item name="inactiveCheckmarkColor">@color/grey_700</item>
+        <item name="secondaryTextColor">@color/grey_100</item>
     </style>
 
     <style name="MyDialogStyle" parent="android:Theme.Material.Light.Dialog">
@@ -36,8 +63,14 @@
         <item name="android:spinnerDropDownItemStyle">@style/dialogFormSpinnerDropDown</item>
     </style>
 
+    <style name="MyDialogStyleDark" parent="android:Theme.Material.Dialog">
+        <item name="android:spinnerItemStyle">@style/dialogFormText</item>
+        <item name="android:spinnerDropDownItemStyle">@style/dialogFormSpinnerDropDown</item>
+    </style>
+
     <style name="Card" parent="CardCommon">
         <item name="android:elevation">1dp</item>
+        <item name="android:background">?attr/cardBackgroundColor</item>
     </style>
 
     <style name="About.Item.Clickable" parent="About.Item">
diff --git a/app/src/main/res/values-v21/styles_list_habits.xml b/app/src/main/res/values-v21/styles_list_habits.xml
index a3e36c850..328e0c1bf 100644
--- a/app/src/main/res/values-v21/styles_list_habits.xml
+++ b/app/src/main/res/values-v21/styles_list_habits.xml
@@ -21,7 +21,7 @@
 <resources>
 
     <style name="ListHabits.Header">
-        <item name="android:background">#f0f0f0</item>
+        <item name="android:background">?headerBackgroundColor</item>
         <item name="android:elevation">2dp</item>
         <item name="android:layout_width">match_parent</item>
         <item name="android:layout_height">wrap_content</item>
diff --git a/app/src/main/res/values/attrs.xml b/app/src/main/res/values/attrs.xml
new file mode 100644
index 000000000..13e8f9be0
--- /dev/null
+++ b/app/src/main/res/values/attrs.xml
@@ -0,0 +1,28 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright (C) 2016 Álinson Santos Xavier <isoron@gmail.com>
+  ~
+  ~ This file is part of Loop Habit Tracker.
+  ~
+  ~ Loop Habit Tracker is free software: you can redistribute it and/or modify
+  ~ it under the terms of the GNU General Public License as published by the
+  ~ Free Software Foundation, either version 3 of the License, or (at your
+  ~ option) any later version.
+  ~
+  ~ Loop Habit Tracker is distributed in the hope that it will be useful, but
+  ~ WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+  ~ or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+  ~ more details.
+  ~
+  ~ You should have received a copy of the GNU General Public License along
+  ~ with this program. If not, see <http://www.gnu.org/licenses/>.
+  -->
+
+<resources>
+    <attr name="windowBackgroundColor" format="reference"/>
+    <attr name="cardBackgroundColor" format="reference"/>
+    <attr name="fadedTextColor" format="reference"/>
+    <attr name="headerBackgroundColor" format="reference"/>
+    <attr name="secondaryTextColor" format="reference"/>
+    <attr name="inactiveCheckmarkColor" format="reference"/>
+</resources>
\ No newline at end of file
diff --git a/app/src/main/res/values/colors.xml b/app/src/main/res/values/colors.xml
index f7f6d597f..ad46cec89 100644
--- a/app/src/main/res/values/colors.xml
+++ b/app/src/main/res/values/colors.xml
@@ -15,15 +15,6 @@
      limitations under the License.
 -->
 <resources>
-    
-    <color name="primary">#37474f</color>
-    <color name="primary_darker">#263238</color>
-    <color name="windowBackground">#e6e6e6</color>
-    <color name="primaryTextColor">@color/grey_900</color>
-    <color name="secondaryTextColor">@color/grey_800</color>
-    <color name="fadedTextColor">@color/grey_600</color>
-
-    <color name="white">#ffffff</color>
 
     <!-- Time and Date picker -->
     <color name="circle_background">#f2f2f2</color>
@@ -151,8 +142,8 @@
     <!--<color name="blue_grey_500">#607D8B</color>-->
     <!--<color name="blue_grey_600">#546E7A</color>-->
     <!--<color name="blue_grey_700">#455A64</color>-->
-    <!--<color name="blue_grey_800">#37474F</color>-->
-    <!--<color name="blue_grey_900">#263238</color>-->
+    <color name="blue_grey_800">#37474F</color>
+    <color name="blue_grey_900">#263238</color>
 
     <!--<color name="pink_50">#FCE4EC</color>-->
     <!--<color name="pink_100">#F8BBD0</color>-->
@@ -324,5 +315,10 @@
     <color name="grey_600">#757575</color>
     <color name="grey_700">#616161</color>
     <color name="grey_800">#424242</color>
+    <color name="grey_850">#303030</color>
+    <color name="grey_875">#282828</color>
     <color name="grey_900">#212121</color>
+
+    <color name="white">#ffffff</color>
+    <color name="black">#000000</color>
 </resources>
\ No newline at end of file
diff --git a/app/src/main/res/values/styles.xml b/app/src/main/res/values/styles.xml
index 2cae6e13d..5d46840ff 100644
--- a/app/src/main/res/values/styles.xml
+++ b/app/src/main/res/values/styles.xml
@@ -41,7 +41,7 @@
     <style name="CardList">
         <item name="android:layout_width">match_parent</item>
         <item name="android:layout_height">wrap_content</item>
-        <item name="android:background">@color/windowBackground</item>
+        <item name="android:background">?windowBackgroundColor</item>
         <item name="android:orientation">vertical</item>
     </style>
 
@@ -102,7 +102,7 @@
         <item name="android:layout_height">wrap_content</item>
         <item name="android:layout_marginLeft">8dp</item>
         <item name="android:layout_marginRight">8dp</item>
-        <item name="android:textColor">@color/fadedTextColor</item>
+        <item name="android:textColor">?fadedTextColor</item>
     </style>
 
 </resources>
diff --git a/app/src/main/res/values/styles_dialog.xml b/app/src/main/res/values/styles_dialog.xml
index 3f45780de..89786814a 100644
--- a/app/src/main/res/values/styles_dialog.xml
+++ b/app/src/main/res/values/styles_dialog.xml
@@ -45,19 +45,19 @@
 
     <style name="dialogFormText">
         <item name="android:textSize">@dimen/regularTextSize</item>
-        <item name="android:textColor">@color/secondaryTextColor</item>
+        <item name="android:textColor">?secondaryTextColor</item>
         <item name="android:layout_width">wrap_content</item>
         <item name="android:layout_height">wrap_content</item>
     </style>
 
     <style name="dialogFormSmallText">
         <item name="android:textSize">@dimen/smallTextSize</item>
-        <item name="android:textColor">@color/fadedTextColor</item>
+        <item name="android:textColor">?fadedTextColor</item>
     </style>
 
     <style name="dialogFormSpinnerDropDown" parent="dialogFormText">
         <item name="android:padding">12dp</item>
-        <item name="android:textColor">@color/secondaryTextColor</item>
+        <item name="android:textColor">?secondaryTextColor</item>
     </style>
 
     <style name="dialogFormInput" parent="dialogFormText">
@@ -74,7 +74,7 @@
         <item name="android:minWidth">100dp</item>
         <item name="android:gravity">left</item>
         <item name="android:paddingLeft">6dp</item>
-        <item name="android:textColor">@color/fadedTextColor</item>
+        <item name="android:textColor">?fadedTextColor</item>
     </style>
 
     <style name="dialogFormSpinner" parent="android:Widget.DeviceDefault.Light.Spinner">
@@ -83,7 +83,7 @@
         <item name="android:paddingLeft">12dp</item>
         <item name="android:textSize">@dimen/regularTextSize</item>
         <item name="android:minWidth">400dp</item>
-        <item name="android:textColor">@color/secondaryTextColor</item>
+        <item name="android:textColor">?secondaryTextColor</item>
     </style>
 
     <style name="dialogFormRow">