This is an example plugin that creates 2 color schemes for use with MP6, using the new `mp6_add_admin_colors` function.

mp6-color-schemes.php

<?php 
/**
 * Plugin Name: MP6 Color Scheme
 */
function kd_mp6_add_colors() {
	// Check that MP6 exists and that our new function exists
	if ( ! defined( 'MP6' ) || ! function_exists( 'mp6_add_admin_colors' ) ) 
		return;
	
	mp6_add_admin_colors( 'sunset', array(
		'label' => 'Sunset',
		'palette' => array( '#b43c38', '#cf4944', '#dd823b', '#ccaf0b' ),
		'icon' => array( 'base' => '#f3f1f1', 'focus' => '#fff', 'current' => '#fff' ),
		'admin_path' => plugin_dir_path( __FILE__ ) . "sunset/admin-colors.css",
		'admin_url'  => plugins_url( "sunset/admin-colors.css", __FILE__ ),
	) );
	
	mp6_add_admin_colors( 'navy', array(
		'label' => 'Navy',
		'palette' => array( '#25282b', '#363b3f', '#69a8bb', '#e14d43' ),
		'icon' => array( 'base' => '#f1f2f3', 'focus' => '#fff', 'current' => '#fff' ),
		'admin_path' => plugin_dir_path( __FILE__ ) . "navy/admin-colors.css",
		'admin_url'  => plugins_url( "navy/admin-colors.css", __FILE__ ),
	) );
}
add_action( 'admin_init' , 'kd_mp6_add_colors' );