tt-rss-android/res/values/style.xml

<resources>
	<style name="LightTheme" parent="android:Theme.Holo.Light">
		<item name="feedlistDivider">@android:drawable/divider_horizontal_bright</item>
		<item name="feedlistBackground">#fafafa</item>
		<item name="unreadCounterColor">#0000ff</item>
	</style>

	<style name="DarkTheme" parent="android:Theme.Holo">
		<item name="feedlistDivider">@android:drawable/divider_horizontal_dark</item>
		<item name="feedlistBackground">#101010</item>
		<item name="unreadCounterColor">#0000ff</item>
	</style>
	
</resources>