Is there an options app that will change the background color to the select color in a dropdown box?
For example. If I create a product in shopify. If I upload a PNG of that product and have red, blue, and purple as the options.
If the user selects red it will change the background of that image to red. So the user can see what that image looks like with a red background.
There are plenty of apps outside Shopify for background change if you're interested, not all of them are working smoothly though:)
That's because not human-powered apps are still quite bad in swapping background colors, especially if we are talking about half-transparent fabrics or feathers - something with not clear edges. For delicate work like this nothing is better than a human specialist work yet:)
You can try retouching services like Squareshot, it's a little bit more than just background change, but maybe that will come in use:)