diff --git a/app/src/main/kotlin/com/simplemobiletools/flashlight/activities/MainActivity.kt b/app/src/main/kotlin/com/simplemobiletools/flashlight/activities/MainActivity.kt
index ea503aa..98b3601 100644
--- a/app/src/main/kotlin/com/simplemobiletools/flashlight/activities/MainActivity.kt
+++ b/app/src/main/kotlin/com/simplemobiletools/flashlight/activities/MainActivity.kt
@@ -28,7 +28,6 @@ class MainActivity : SimpleActivity() {
 
     private var mBus: Bus? = null
     private var mCameraImpl: MyCameraImpl? = null
-    private var translucentWhite = 0
     private var mStoredUseEnglish = false
 
     override fun onCreate(savedInstanceState: Bundle?) {
@@ -37,9 +36,7 @@ class MainActivity : SimpleActivity() {
         appLaunched()
 
         mBus = BusProvider.instance
-        translucentWhite = resources.getColor(R.color.translucent_white)
-        changeIconColor(translucentWhite, bright_display_btn)
-        changeIconColor(translucentWhite, stroboscope_btn)
+        changeIconColor(config.backgroundColor.getContrastColor(), stroboscope_btn)
 
         bright_display_btn.setOnClickListener {
             startActivity(Intent(applicationContext, BrightDisplayActivity::class.java))
@@ -63,13 +60,18 @@ class MainActivity : SimpleActivity() {
         mCameraImpl!!.handleCameraSetup()
         checkState(MyCameraImpl.isFlashlightOn)
 
+        changeIconColor(config.backgroundColor.getContrastColor(), bright_display_btn)
         bright_display_btn.beVisibleIf(config.brightDisplay)
         stroboscope_btn.beVisibleIf(config.stroboscope)
         if (!config.stroboscope) {
             mCameraImpl!!.stopStroboscope()
             stroboscope_bar.beInvisible()
         }
+
         updateTextColors(main_holder)
+        if (stroboscope_bar.isInvisible()) {
+            changeIconColor(config.backgroundColor.getContrastColor(), stroboscope_btn)
+        }
     }
 
     override fun onStart() {
@@ -169,8 +171,8 @@ class MainActivity : SimpleActivity() {
 
     private fun cameraPermissionGranted() {
         if (mCameraImpl!!.toggleStroboscope()) {
-            stroboscope_bar.beInvisibleIf(stroboscope_bar.visibility == View.VISIBLE)
-            changeIconColor(if (stroboscope_bar.visibility == View.VISIBLE) config.primaryColor else translucentWhite, stroboscope_btn)
+            stroboscope_bar.beInvisibleIf(stroboscope_bar.isVisible())
+            changeIconColor(if (stroboscope_bar.isVisible()) config.primaryColor else config.backgroundColor.getContrastColor(), stroboscope_btn)
         }
     }
 
@@ -196,12 +198,12 @@ class MainActivity : SimpleActivity() {
         changeIconColor(config.primaryColor, toggle_btn)
         window.addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON)
 
-        changeIconColor(translucentWhite, stroboscope_btn)
+        changeIconColor(config.backgroundColor.getContrastColor(), stroboscope_btn)
         stroboscope_bar.beInvisible()
     }
 
     private fun disableFlashlight() {
-        changeIconColor(translucentWhite, toggle_btn)
+        changeIconColor(config.backgroundColor.getContrastColor(), toggle_btn)
         window.clearFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON)
     }
 
diff --git a/app/src/main/res/drawable/circles_big.xml b/app/src/main/res/drawable/circles_big.xml
index ab23393..9746f39 100644
--- a/app/src/main/res/drawable/circles_big.xml
+++ b/app/src/main/res/drawable/circles_big.xml
@@ -23,7 +23,7 @@
             android:shape="oval">
             <stroke
                 android:width="13dp"
-                android:color="@color/translucent_white"/>
+                android:color="@android:color/white"/>
             <solid android:color="@android:color/transparent"/>
         </shape>
     </item>
@@ -33,7 +33,7 @@
             android:shape="oval">
             <stroke
                 android:width="13dp"
-                android:color="@color/translucent_white"/>
+                android:color="@android:color/white"/>
             <solid android:color="@android:color/transparent"/>
         </shape>
     </item>
diff --git a/app/src/main/res/layout/activity_main.xml b/app/src/main/res/layout/activity_main.xml
index a580d57..6f599bf 100644
--- a/app/src/main/res/layout/activity_main.xml
+++ b/app/src/main/res/layout/activity_main.xml
@@ -4,7 +4,6 @@
     android:id="@+id/main_holder"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    android:background="@android:color/black"
     android:gravity="center"
     android:orientation="vertical"
     android:padding="@dimen/activity_margin">
diff --git a/app/src/main/res/layout/widget_config.xml b/app/src/main/res/layout/widget_config.xml
index 8088c5d..bb90dbb 100644
--- a/app/src/main/res/layout/widget_config.xml
+++ b/app/src/main/res/layout/widget_config.xml
@@ -23,8 +23,8 @@
 
     <Button
         android:id="@+id/config_widget_color"
-        android:layout_width="50dp"
-        android:layout_height="50dp"
+        android:layout_width="@dimen/widget_colorpicker_size"
+        android:layout_height="@dimen/widget_colorpicker_size"
         android:layout_above="@+id/config_save"/>
 
     <RelativeLayout
@@ -48,10 +48,10 @@
     <Button
         android:id="@+id/config_save"
         android:layout_width="wrap_content"
-        android:layout_height="50dp"
+        android:layout_height="wrap_content"
         android:layout_alignParentBottom="true"
         android:layout_alignParentRight="true"
-        android:background="@color/translucent_black"
+        android:background="@color/gradient_grey_start"
         android:fontFamily="sans-serif-light"
         android:paddingLeft="@dimen/activity_margin"
         android:paddingRight="@dimen/activity_margin"
diff --git a/app/src/main/res/values/colors.xml b/app/src/main/res/values/colors.xml
index 7149e29..0ebcd87 100644
--- a/app/src/main/res/values/colors.xml
+++ b/app/src/main/res/values/colors.xml
@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <resources>
-    <color name="translucent_white">#eeffffff</color>
-    <color name="translucent_black">#88000000</color>
+    <!-- Default colors -->
+    <color name="default_text_color">@color/theme_dark_text_color</color>
+    <color name="default_background_color">@color/theme_dark_background_color</color>
 </resources>