Black ones on a customer bike. Some 2 tone seats, and a side by side shape comparison of my seat vs a stock seat. Rear seat has upgraded foam, but is not a drastic shape change like the rider seat. Rider seat is about an inch difference in height. The front edge is also slightly extended to help with the infamous airbox gap problem.
I can be reached directly at stitch@customcycleseats.com
Carbon fiber colors in stock are black, charcoal, medium grey, silver, white, or blue.
I have one front-only seat available. The rest are front/rear sets.