If you are looking to spend under $100, I found some great colorful bags that will satisfy your craving for brights. Click on any of the images below for more information, pricing can be found below each photo.
I also like the following options from Francesca's Collection:
Sunlit Bag - $38 (click HERE - also comes in yellow)
Endless Bag - $54 (click HERE) - *My Fave*
Sea Level Bag - $48 (click HERE)