One of my biggest concerns with most applications these days is the poor use of color. Saturation is a big part of the problem and I think this article does a good job addressing the issues and explaining why having a bunch of over-saturated colors confuses the user and provides a bad experience in general. If you are new to color theory or UX design, I would highly suggest that you read this article and others that are similar.
How Color Saturation Affects User Efficiency | UX Movement.
