Playgym question

Kit

Is this too bland (color-wise) to be stimulating? I want to get the best gym/mat for my baby but I can't stand the cartoony look of most of them. I was thinking I could trade out ehats there for some brighter toys but I know the mat is important, too

EDIT: since folks are asking, this is the Skip Hop Silver Lining Cloud Activity Gym. It's on Amazon :)