I made a gum paste Dumbo figure to place on top of a baby shower cake.  I've been drying it in the oven on my 'dryer' function, which is basically dehydrate.  I started 'painting' it yesterday, and while I'm pleased with most of it, it's not drying.  I used gel food coloring, white and black for the body, and regular food coloring for the collar and hat.  The grey body is still tacky. I have to deliver the cake on Saturday.  I also made a disc of plain Gum paste to put Dumbo on top, so that it can be removed easily from the top of the cake when it comes time to cut it.  I would like to put another thin coat of color on top, but hesitate to do so.  Any hints, gratefully accepted.  Thanks in advance.

I've only used gel color for painting on fondant, straight from the container, not diluted, once and it took a month to dry.  Black is the worst!  Now I always use powdered colors mixed with vodka and on the rare occasion that I do use gel color, I thin it liberally with vodka.  I am sorry I cannot offer any hints on how to get it to dry because mine never did....or if it did, I wasn't around to see it.