All the Kaffe Fasset quilts that I have seen sort of just seem to be a happy riot of color. I would second what everyone else is saying- if you like it, go for it.
Do you have a design wall to test your blocks? I heard an idea on this board and use it all the time- you just tack a flannel backed tablecloth on the wall with the flannel side out and you can stick your blocks to it and move them around. Works like a charm and cheap, too!