PRI has GREAT colors for saddle pads, an awesome selection. (they hold up well too) I have a black/white paint that I thought I was going to buy everything purple for too...but once I bought her aqua/turquoise PRI saddle pad I quickly switched. It looks sharp and everyone asks where I bought the color.
Aw he's cute. I think white looks nice on horses with a lot of chrome but if you want more color I agree with the others that navy blue would look nice!