Fixed MANTIS-5719 (Use seed_hex for logo text colour)

        shuffle($default_backgrounds);

        $logo_theme_image = post_param_string('logo_theme_image', array_shift($default_logos));

        $background_theme_image = post_param_string('background_theme_image', array_shift($default_backgrounds));

        $colour = get_theme_option('header_classic_text_colour');

        $colour = post_param_string('seed_hex', get_theme_option('header_classic_text_colour'));

        set_option('header_classic_image', $background_theme_image);