I've stenciled with black BC frosting before with no bleeding. Did not use the wet spatula method, I just thinned down the BC frosting so that it was easy to smooth on the BC cake I made. I found it easy to either use can chocolate frosting died black or buying premade black frosting and thinning it down with a little water or milk. I hope this help. I've stenciled in red, blue and white. I stencil on chilled cakes, never room temp.
11/19/11 at 7:22am