gistfile1.php

<?php
$css->add(
	'theme_primary', // Customize name (must be unique)
	'color', // Customize type, (section or whatever you want, only section has a custom use at this point)
	array(
		'label' => __( 'Main color' ), // Label for the option
		'object' => 'html, body', // The css DOM object to style
		'selector' => 'color', // The css attribute to style
		'default' => '#000000', // The default value
		'type' => 'color', // The controller type
		'section' => 'colors' // Customize API section
	)
);