I tried to use these to change the color of white chocolate. I didn't think about mixing the black with the white chocolate. I wanted black chocolate since I couldn't find any color melts but obviously white & black mixed makes grey. There was no amount I could add that would create black which was disappointing but understandable. Just wanted to put that out there for anyone else who wasn't thinking about that like I was. The other colors paired beautifully & the chocolate still tasted the same to me.