Develop a JS based graphic linked to ecommerce site

We have a product that has over 61,000 colour variations, made of 4 components. We would like to present to the customer a colour representation of that product as they select the options from drop down lists. We have a vector image of the product, and an SVG version, but need a suitable cross browser version (possibly with Raphael JS) and then have this integrated with our Interspire Shopping Cart. We'll need modifications to link the JS events that fire on drop down changes to update the image colours.