I was going to do the same thing, So I found a company in Huntington Beach and they quoted me $150.00 (powder coating). I have now decided that I like the stock look of the prius and will not be doing much to it other than tint (when I can find the time). I used to customize all my cars with poor result and problems coming from the customization.
Nothing better than a stock car, especially when it comes with just about everything.