If you want to setup swatches for custom colors, like this:

Please upload an image (50x50 pixels, PNG format) with the color you want into Assets. 

Please note that the image file name must match the color.

For example, if you have a color called 'Burgundy', then name your image burgundy.png (all characters must be in lower case)

If you have a color called 'Déjà Vu Blue', then name your image deja-vu-blue.png

Other example, if your color is 'Blue/Gray', then name your image blue-gray.png

Most simple example, if your color is 'Black', the name your image black.png

Best Regards,
RoarTheme Support Team.