It's not uncommon for the skirts or bumper to be a slightly different shade. Those parts are fiberglass/poly/cf, it's hard to match them to metal. My front bumper is barely a different shade, I can tell but, no one else can.
That lip on there, believe it or not helps out alot. Mine isn't as long as yours but, it saves the bottom of the bumper when I don't angle it enough on a driveway. Look into getting the Turbo lip.
I love the interior, looks awesome. I think I'm going with yellow around the top part and cf everywhere else.
Are those Techart side skirts? I agree though, you need the diffusers in the rear to complete the look. Don't get me wrong though, your car looks great.
