If you are using ActionBarSherlock, and want to quickly change the color, and size of the title, you need to fiddle a bit with a style resource. Here is what you need to do:

Create a resource file styles_mytheme.xml under res/values folder and copy the following. (Note: If you already have your theme styles defined earlier, perhaps using the Android Action Bar Style Generator, just match the style elements based on the parent=”xxx”, and add the missing item elements.)

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<?xml version="1.0" encoding="utf-8"?>
 
<resources>
    <style name="MyTheme" parent="@style/Theme.Sherlock">
        <item name="actionBarStyle">@style/MyTheme.ActionBarStyle</item>
    </style>
 
    <style name="MyTheme.ActionBarStyle" parent="@style/Widget.Sherlock.ActionBar">
        <item name="android:titleTextStyle">@style/MyTheme.TitleTextStyle</item>
    </style>
 
    <style name="MyTheme.TitleTextStyle" parent="@style/TextAppearance.Sherlock.Widget.ActionBar.Title">
        <item name="android:textColor">#CC0000</item>
        <item name="android:textSize">20sp</item>
    </style>
 
</resources>

Now, you need to use MyTheme instead of using a SherlockTheme. Basically, in your AndroidManifest.xml file, you need to have something like:

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<application
        android:label="@string/app_name"
        android:theme="@style/Theme.tagsnap">
 
    ...
    ...
    ...
</application>