This mod displays the images associated with your option values as additional images on the product page. This streamlines the workflow when adding new products, as you don't have to put the images in the product AND the options_values page.
Workflow: Install the xml file in the vqmod/xml/ directory. In your admin panel under the 'Catalog' tab, select 'Options'. Click on 'edit' for the particular option you're working with, then ensure that the desired product images are associated with the different options.
OpenCart allows you to create multiple 'Color' options, so that you can use different pictures for different products.
Access the demo site here.
Combine this mod with Change Image with Option
for a really slick experience.