android activity theme customize colors

<activity    android:name=".LoginActivity"    

android:label="@string/app_name"    

android:screenOrientation="portrait"    

android:theme="@style/LoginTheme.NoActionBar">
    <intent-filter>
        <action android:name="android.intent.action.MAIN" />

        <category android:name="android.intent.category.LAUNCHER" />
    </intent-filter>
</activity>

<!-- Login application theme. --><style name="LoginTheme" 

parent="Theme.AppCompat.Light.DarkActionBar">
    <!-- Customize your theme here. -->    <item name="colorPrimary">@color/colorPrimary</item>
    <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
    <item name="colorAccent">@color/colorAccent</item>
</style>

<style name="LoginTheme.NoActionBar">
    <item name="windowActionBar">false</item>
    <item name="windowNoTitle">true</item>
</style>

• colorPrimary – The color of the app bar.
• colorPrimaryDark – The color of the status bar and contextual app bars; this is normally a dark version of colorPrimary.
• colorAccent – The color of UI controls such as check boxes, radio buttons, and edit text boxes.
• windowBackground – The color of the screen background.
• textColorPrimary – The color of UI text in the app bar.
• statusBarColor – The color of the status bar.
• navigationBarColor – The color of the navigation bar.

you can use following link to setup your style.