I'm using the prestige theme and I created 2 different variants for my products in my store under ''material'', now I added the custom colors to the shopify files plus I turned the option to show swatches on my collection pages on. But the swatches still won't show up. I used the same handle name as the variant options (lower case, no spaces and etc.). I just don't manage to get it to show up.
Help would be greatly appreciated!
Which version of Prestige are you using? The documentation is slightly different based on the version number: https://support.maestrooo.com/article/80-product-uploading-custom-color-for-color-swatch
One other issue might be: If Shopify has renamed the file (like "black-2.png" or something else), this means that a file already existed with the same name. In this case you will need to first remove the original file from the Files, and re-upload again your file.
Have you confirm they are png and include .png in the name?
Because those images must be in PNG format, the final image must be named, in this example, "black-metal.png" (make sure that .png extension is in lowercase as well).