How to Disable Color Options?
In TwentyTen’s functions.php the custom background is added in twentyten_setup() which is called on the action ‘after_setup_theme’. So, in your child theme, the following should remove the option completely: // Higher priority to work after TwentyTen add_action( ‘after_setup_theme’, ‘wpse12934_remove_custom_background’, 20 ); function wpse12934_remove_custom_background() { remove_custom_background(); }