If you're referring to match writing there is a template for that depending on the show. As for role plays themselves, no there isn't. You can have plain gray text with a standard font and be fine, or add tables, different fonts, sizes, and colors, etc. It actually all depends on the sort of style or visual you want to represent.

FYI - While adding certain formats to rps REALLY doesn't matter THAT much, making them pretty and fancy does make them more appealing to the sight and sometimes easier and more enjoyable to read for the readers and or judges.

More questions? Don't be shy, no one will hold it against you for your newbie status.