As Rainbow (Arica Himmel) prepares to celebrate her 13th birthday, she doesn't feel as adult as she expected. But she has a conversation with GrownUp Rainbow (Tracee Ellis Ross) who lets her know that change is coming. From 'True Colors,' season 1, episode 14 of mixedish. Watch mixedish TUESDAY 9|8c on ABC, streaming, on demand, and Hulu.