I'm not sure what you mean by colorful.
Do you mean graphics that are bright and easy to see? I.E. Super Mario Galaxy?
And I'd say Paper Mario: Sticker Star, Quest RPG: Brian's Journey, and Touhoumon: Merry's Version.
edited 3rd Jun '13 4:02:31 PM by Irene
Some Guy Or Something
Gotcha Force. It isn't a recent title by any means*, but it is most certainly colourful.
edited 3rd Jun '13 2:52:27 PM by EviIPaladin
"Evii is right though" -Saturn "I didn't know you were a bitch Evii." -Lior Val
The Project X Zone demo. Combos and support attacks exploding all over the place. 
Absolutely no relation to NLK
Ghost Trick. And it all takes place during the night, too.
Touch The Sky
It's been a while, but I'd say Katamari Damacy
.
edited 3rd Jun '13 7:39:48 PM by SixthSaint
Burn
Bastion. Also a surprisingly sombre title.
Fight. Struggle. Endure. Suffer. LIVE.
Sonic Colors. Soon to be Sonic Lost World.
edited 3rd Jun '13 9:17:43 PM by PhysicalStamina
What are some of the most colorful games you've played recently?
The Protomen enhanced my life.