Personally, I think the rockers give a much need update to the car, That's why I did mine when I did plus also added the side view mirrors.
IMO, I think when modding a vehicle's exterior with things that enhances its visual perspective it should all flow together.
I also think painting your rockers color matched would blend in better since your rear and front bumper are already gloss.
The only thing that I think flows well is the front and side splitter in combination.
Don"t get me wrong I think your car looks great.
Then again, this is my personal opinion.
Here's my car and it's theme. The GT500 rear bumper is going in for paint next week with the matte wrap around diffuser to match the rockers.