What exactly are these? Do they contain dyes to get that color? I'm trying to stay away from synthetic dyes and only use colorant from nature. These have such pretty colors! I'd love to be able to use them, but I just don't understand exactly what they are. I tried using beet root powder - the instructions said it can be added directly to soap...well, it certainly can, if you're going for the poo look LOL It was truly ugly soap, I'll have to post some pics