In the game, the color associated with her is pink. This can be seen by the pink glasses, and her being of the Lovers Social Link in game. She's recently been announced as playable in the new Persona fighter, Persona 4 Arena: Ultimax. If you're interested please check out the video at this link.
She is pretty much my favorite female character in the Persona series, alongside Yukiko Amagi and Aigis. I'm very excited to see her in Persona 4 Arena, and I'll probably play her a lot once the game comes out.
For anyone who wants Rise fan art, I've created a folder full of Rise goodness. You can download it here. Please remember to check out the wonderful artists who created beautiful art of Rise. For tracking pictures back to their sources, please use SauceNao. Enjoy, and again happy birthday Rise-chan!