I rode in a 11' GT vert with the brick red seats. That color combo worked really well because you can see most of the seat from outside of the car and the red really popped out of the black exterior. I would be careful getting the Red interior with any of the flashier colors (grabber, Kona, don't think they offer it in RR). Saddle I can't comment on, haven't seen it in person.
GT/CS Race Red M/T
Delivered 6/21, first day of summer