gistfile1.php

// Create color style options
add_theme_support(
	'genesis-style-selector',
	array(
		'latent-blue'   	=> __( 'Blue', CHILD_DOMAIN ),
		'latent-green'  	=> __( 'Green', CHILD_DOMAIN ),
		'latent-orange' 	=> __( 'Orange', CHILD_DOMAIN ),
		'latent-red'    	=> __( 'Red', CHILD_DOMAIN ),
	)
);

// Add theme color body class for demoing colors
add_filter( 'body_class', 'latent_add_category_class_single' );
function latent_add_category_class_single( $classes ) {
    $classes[] = 'latent-' . $_GET['color'];
    return $classes;
}