Help wtih Guinea Pig C&C Cage Fleece!!!!!!!!!!!!?

OK i have this guinea pig c&C cage. I use fleece instead of carefresh) its easier for me). Right now i have plain brown fleece because my mom though she would not see the poops when she looked at the cage. That was cool but on GuineaPigcages.com, everyone has cool fleece for their guinea pig cages. Im a 13 year old boy and i want some cool fleece. My 2 guinea pigs are girls. What would be some good fleece choices for me? Ex: Like a local sports team fleece, or transformers. What is good for a 13 year old buy with boring fleece to make my cage seem brighter and more exciting. Also i have read in a post on THe GUinePigcages.com that sometimes guinea pigs popcorn when they have ceartain fleece. What kind do you think guine pigs would do this to?