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>
		<item name="headlinesBackground">#ffffff</item>
		<item name="articleDivider">#f0f0f0</item>
		<item name="articleHeader">#E8F2FF</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>
		<item name="headlinesBackground">#000000</item>
		<item name="articleDivider">#303030</item>
		<item name="articleHeader">#101010</item>
	</style>
	
	<style name="SelectedFeed">
		<item name="android:textStyle">bold</item>
	</style>
	
	<style name="Feed">
		<item name="android:textStyle">normal</item>
	</style>
	
	<style name="UnreadArticle">
		<item name="android:textStyle">bold</item>
	</style>
	
	<style name="Article">
		<item name="android:textStyle">normal</item>
	</style>
	
</resources>