Hide Configurable Swatches on Category Page if only one option exists

[msecomm]

We have some configurable products (configurable by color) that have only option due to items becoming unavailable, out of stock, etc.

How can we hide configurable swatches on the category pages for any configurable product that only has 1 color option?

[Tom Robertshaw]

I believe this is the template that manages swatched on a category page. Before the for loop on this line: https://github.com/OpenMage/magento-mirror/blob/505e8e982ad5f4fd22005060564cad210aab7b6f/app/design/..., you could check the number of swatches and not output any swatches if there's only one.