Adding colours

Hey

I found this code in your faq:

add_filter( 'wpdn_colors', 'wpdn_add_purple' );
function wpdn_add_purple( $colors ) {

    $colors['purple'] = '#5236A0';

    return $colors;

}

In case I wish to add more than one colour, how do I do that? Do I add a colour line or repeat the entire code block?

I assume changing purple everywhere according to the color is ok?