Hi I'm new to cake central but I need help! I bought a tub of Duff purple and was wondering if anyone has used it and attempted to darken it to a darker more plum purple?!

I haven't used Duff's purple but when I needed a plummy purple I mixed violet and a little burgundy. So, my suggestion would be to first darken the purple with either violet or blue and red. Then, if it's nut plummy enough, add some burgundy.

thanks! i will definitely give that a try