Hi, we have developed a easy color chooser plugin for virtuemart .
(http://virtuemartoz.com/images/colorchooser-logo.png)
http://virtuemartoz.com/other-virtuemart-extensions/unlimited-color-chooser-for-virtuemart.html
Test here
http://demo.virtuemartoz.com/index.php?option=com_virtuemart&view=productdetails&virtuemart_product_id=1010&virtuemart_category_id=3&Itemid=117