Here's a a cake I made (the subject matter is a long story; I know it's cheesy!) using the two most difficult colors--red and black. The black started out being dark, dark gray and the red started out being dark pink. Once they hit the air and dried, the end result is what you see. I think they are pretty vivid and right on the money. I used the AmeriColor gels in the flip-top bottle and a half Crisco/half butter recipe.
Side note--the cake is covered in rolled fondant and then decorated with a bct and buttercream piping. Not one person (six people altogether) complained about the fondant--some went back for seconds and all enjoyed it! I asked what they thought of the fondant, and two of my friends who are very picky eaters loved it! The others found it to just blend in with the rest of the cake. So the fondant debate goes on....
