On the Craftsy site, one of the decorators uses Scotch Tape on her fondant covered cake before painting it to get her design. I think it was Collette Peters, not positive though. There is a free video of her using this...
I think it was taped off and airbrushed. Same as the stripes. I don't believe it is gold leaf because it it too smooth and perfect looking. Also the first and second tiers also contain the same colour and consistency...
Your post says you crumb coated with caramel bc. When you use ganache you don't crumb coat with bc. You just use the ganache to crumb coat and ice. And with a soft filling you need a good dam inside to hold it...
I had that happen a couple times when I let the cake cool too long in the pan.
So if you are cooling the cakes in their pans, try cooling them on a rack out of the pan.
I figured it was moisture build up from...
I strictly bake Gluten-Free and all my recipes are from scratch. I have worked them out through lots of trial and error. Lots of cash and lots of trash. Now that they are perfected, I will never give them out....