各位大神，怎么样修改PreferenceCategory中的title的颜色呢？？

[FightFightFight]

<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android">
<PreferenceCategory android:title="@string/preferences_general_title">
<CheckBoxPreference
android:key="preferences_hide_declined"
android:defaultValue="false"
android:title="@string/preferences_hide_declined_title" />
<CheckBoxPreference
android:key="preferences_show_week_num"
android:defaultValue="true"
android:title="@string/preferences_show_week_num_title" />
</PreferenceCategory >
</PreferenceScreen >