I made a FBCT of a logo for a group meeting of campers I was going to. I put it on the cake and then froze the cake since it was going to travel in hot weather. When the cake thawed the condensation caused the colors in the logo to bleed into one another. Luckily, the cake wasn't for a paying customer but I was so embarrassed I almost wanted it to fall on the floor so I would have an excuse not to bring it out.

I thought I read somewhere on CC that you could freeze a completed cake. Am I nuts or what?

I doubt it had anything to do with the freezing aspect of it. Darker colors will bleed with BC normally. If you add some MP to it then it shouldn't happen.

Thanks so much! That explains why it happened. This is the first time I've used an icing that doesn't have MP!