My 2 cents...keep the cobalt. I had an 05 GT silver C2S before I got my 08 cobalt blue TT.

For a slightly iconoclastic view...I decided to get the DAJ exterior painted option with the front grill painted cobalt blue. I was worried with what other folks had written, but since picking up the car, I think it looks FANTASTIC...especially with the rockers also painted. IMHO, it's not too much and really makes the car look "unified."