styles-v21.xml

<?xml version="1.0" encoding="utf-8" ?>
<resources>
  <!--
        Base application theme for API 21+. This theme completely replaces
        MyTheme from BOTH res/values/styles.xml on API 21+ devices.
    -->
  <style name="MyTheme" parent="MyTheme.Base">
    <item name="android:windowDrawsSystemBarBackgrounds">true</item>
    <item name="android:statusBarColor">@android:color/transparent</item>
  </style>

  <style name="SplashTheme" parent="SplashTheme.Base">
    <item name="android:windowTranslucentNavigation">true</item>
    <item name="android:windowDrawsSystemBarBackgrounds">true</item>
    <item name="android:statusBarColor">@android:color/transparent</item>
  </style>
</resources>

styles.xml

<?xml version="1.0" encoding="UTF-8"?>
<resources>
  <style name="MyTheme" parent="MyTheme.Base">
  </style>
  <!-- Base theme applied no matter what API -->
  <style name="MyTheme.Base" parent="Theme.AppCompat.Light.NoActionBar">
    <!--If you are using revision 22.1 please use just windowNoTitle. Without android:-->
    <item name="windowNoTitle">true</item>
    <!--We will be using the toolbar so no need to show ActionBar-->
    <item name="windowActionBar">false</item>
    <!-- Set theme colors from http://www.google.com/design/spec/style/color.html#color-color-palette-->
    <!-- colorPrimary is used for the default action bar background -->
    <item name="colorPrimary">@color/primary</item>
    <!-- colorPrimaryDark is used for the status bar -->
    <item name="colorPrimaryDark">@color/primaryDark</item>
    <!-- colorAccent is used as the default value for colorControlActivated
         which is used to tint widgets -->
    <item name="colorAccent">@color/accent</item>
    <!-- You can also set colorControlNormal, colorControlActivated
         colorControlHighlight and colorSwitchThumbNormal. -->
    <item name="windowActionModeOverlay">true</item>
    <item name="android:datePickerDialogTheme">@style/AppCompatDialogStyle</item>


    <item name="android:windowBackground">@color/window_background</item>
  </style>

  <style name="AppCompatDialogStyle" parent="Theme.AppCompat.Light.Dialog">
    <item name="colorAccent">@color/accent</item>
  </style>

  <style name="SplashTheme.Base" parent="Theme.AppCompat.Light.NoActionBar">
    <item name="android:windowBackground">@drawable/splash_screen</item>
  </style>

  <style name="SplashTheme" parent="SplashTheme.Base">
  </style>
</resources>