diff --git a/app/src/main/java/com/simplemobiletools/calculator/MainActivity.java b/app/src/main/java/com/simplemobiletools/calculator/MainActivity.java
index 829a112c..81635c1e 100644
--- a/app/src/main/java/com/simplemobiletools/calculator/MainActivity.java
+++ b/app/src/main/java/com/simplemobiletools/calculator/MainActivity.java
@@ -54,10 +54,10 @@ public class MainActivity extends AppCompatActivity implements Calculator {
     private void setupResultView() {
         final Resources res = getResources();
         result.setBackgroundColor(res.getColor(android.R.color.white));
-        result.setTextColor(res.getColor(R.color.dark_grey));
+        result.setTextColor( res.getColor(R.color.text_grey));
 
         formula.setBackgroundColor(res.getColor(android.R.color.white));
-        formula.setTextColor(res.getColor(R.color.dark_grey));
+        formula.setTextColor(res.getColor(R.color.text_grey));
     }
 
     @OnClick(R.id.btn_plus)
diff --git a/app/src/main/java/com/simplemobiletools/calculator/MyWidgetConfigure.java b/app/src/main/java/com/simplemobiletools/calculator/MyWidgetConfigure.java
index 0d13a5ff..0d9af5af 100644
--- a/app/src/main/java/com/simplemobiletools/calculator/MyWidgetConfigure.java
+++ b/app/src/main/java/com/simplemobiletools/calculator/MyWidgetConfigure.java
@@ -56,7 +56,7 @@ public class MyWidgetConfigure extends AppCompatActivity {
         bgColor = prefs.getInt(Constants.WIDGET_BG_COLOR, 1);
         if (bgColor == 1) {
             bgColor = Color.BLACK;
-            bgAlpha = .5f;
+            bgAlpha = .2f;
         } else {
             bgAlpha = Color.alpha(bgColor) / (float) 255;
         }
@@ -67,7 +67,7 @@ public class MyWidgetConfigure extends AppCompatActivity {
         bgSeekBar.setProgress((int) (bgAlpha * 100));
         updateBackgroundColor();
 
-        textColor = prefs.getInt(Constants.WIDGET_TEXT_COLOR, Color.WHITE);
+        textColor = prefs.getInt(Constants.WIDGET_TEXT_COLOR, getResources().getColor(R.color.colorPrimary));
         updateTextColor();
 
         formula.setText("15,937*5");
diff --git a/app/src/main/java/com/simplemobiletools/calculator/MyWidgetProvider.java b/app/src/main/java/com/simplemobiletools/calculator/MyWidgetProvider.java
index 6ee9dad9..2af7e51b 100644
--- a/app/src/main/java/com/simplemobiletools/calculator/MyWidgetProvider.java
+++ b/app/src/main/java/com/simplemobiletools/calculator/MyWidgetProvider.java
@@ -62,7 +62,7 @@ public class MyWidgetProvider extends AppWidgetProvider implements Calculator {
         cxt = context;
         updateWidgetIds();
         prefs = initPrefs(cxt);
-        final int defaultColor = cxt.getResources().getColor(R.color.dark_grey);
+        final int defaultColor = cxt.getResources().getColor(R.color.text_grey);
         final int newBgColor = prefs.getInt(Constants.WIDGET_BG_COLOR, defaultColor);
         final int newTextColor = prefs.getInt(Constants.WIDGET_TEXT_COLOR, Color.WHITE);
 
diff --git a/app/src/main/res/layout/activity_main.xml b/app/src/main/res/layout/activity_main.xml
index cadc4d9b..ba4fad9e 100644
--- a/app/src/main/res/layout/activity_main.xml
+++ b/app/src/main/res/layout/activity_main.xml
@@ -5,7 +5,7 @@
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    android:background="@color/dark_grey"
+    android:background="@color/buttons_background"
     android:orientation="vertical"
     android:theme="@style/MainTheme"
     tools:context=".MainActivity">
@@ -15,6 +15,7 @@
         android:layout_width="match_parent"
         android:layout_height="match_parent"
         android:layout_weight="2.1"
+        android:fontFamily="sans-serif-light"
         android:gravity="right|bottom"
         android:lines="1"
         android:paddingLeft="@dimen/activity_margin"
@@ -27,6 +28,7 @@
         android:layout_width="match_parent"
         android:layout_height="match_parent"
         android:layout_weight="1.8"
+        android:fontFamily="sans-serif-light"
         android:gravity="center_vertical|right"
         android:lines="1"
         android:paddingLeft="@dimen/activity_margin"
diff --git a/app/src/main/res/values-v21/styles.xml b/app/src/main/res/values-v21/styles.xml
index 083dcdfb..3f344e16 100644
--- a/app/src/main/res/values-v21/styles.xml
+++ b/app/src/main/res/values-v21/styles.xml
@@ -1,9 +1,10 @@
 <resources>
 
     <style name="MyButton" parent="Widget.AppCompat.Button">
-        <item name="android:textColor">@android:color/white</item>
+        <item name="android:textColor">@color/colorPrimary</item>
         <item name="android:background">?android:attr/selectableItemBackgroundBorderless</item>
         <item name="android:textSize">@dimen/button_text_size</item>
+        <item name="android:fontFamily">sans-serif-light</item>
     </style>
 
 </resources>
diff --git a/app/src/main/res/values/colors.xml b/app/src/main/res/values/colors.xml
index 8b20aeb6..0fac03a7 100644
--- a/app/src/main/res/values/colors.xml
+++ b/app/src/main/res/values/colors.xml
@@ -1,9 +1,9 @@
 <?xml version="1.0" encoding="utf-8"?>
 <resources>
-    <color name="colorPrimary">#3F51B5</color>
-    <color name="colorPrimaryDark">#303F9F</color>
-    <color name="colorAccent">#FF0000</color>
-    <color name="dark_grey">#88000000</color>
-    <color name="dark_grey_pressed">#aa000000</color>
-    <color name="dark_grey_pressed_mask">#22000000</color>
+    <color name="colorPrimary">#ffff6f00</color>
+    <color name="colorPrimaryDark">#ffe46300</color>
+    <color name="colorAccent">@color/colorPrimary</color>
+    <color name="buttons_background">#05000000</color>
+    <color name="text_grey">#77000000</color>
+    <color name="dark_grey_pressed_mask">#11000000</color>
 </resources>
diff --git a/app/src/main/res/values/styles.xml b/app/src/main/res/values/styles.xml
index 57b137c2..a4249801 100644
--- a/app/src/main/res/values/styles.xml
+++ b/app/src/main/res/values/styles.xml
@@ -11,9 +11,10 @@
     </style>
 
     <style name="MyButton" parent="Widget.AppCompat.Button">
-        <item name="android:textColor">@android:color/white</item>
+        <item name="android:textColor">@color/colorPrimary</item>
         <item name="android:background">@drawable/button</item>
         <item name="android:textSize">@dimen/button_text_size</item>
+        <item name="android:fontFamily">sans-serif-light</item>
     </style>
 
     <style name="MyWidgetConfigTheme" parent="@style/AppTheme">