[ReagentX]

Actually, you only need to add


$args = array(
'default-color' => '000000',
'default-image' => get_template_directory_uri() . '/images/background.jpg',
);
add_theme_support( 'custom-background', $args );


to the functions.php file. I’m quite put-off by your dishonest development, why would you want to charge me for something as simple as this?