First of all, congratulations on your new car. Let me tell you that despite the fact that colors and tastes are a matter of opinion, the yellow color shouln't be thought of twice. All yellow colors are the best and no other color beats it when it comes for turning people's heads.
So I guess you made the absolute right choice. Now regarding tuning and modifying it, I'm more than 100% against that decision because you're going to mess it up BIG time.