"Hey guys, I think I found a solution for this. There's a free extension available on the Opencart marketplace that provides a color filter function. Worth checking out if you haven't already!"
"Hey guys, I'm not familiar with the new color filter in Opencart 2.x, but for 1.5.x there's a simple plugin you can easily install from the admin panel. Just check the extension manager for 'Color Filter' and see if it fits your needs."