Why Does the SurfacePad for Air Come in Red or Black?

This post refers to twelvesouth.com

Twelve South has released the SurfacePad or MacBook Airs. It’s a wrist wrest that attaches to your MacBook Air and it comes in black or red. Why black or red? Why not silver/grey so that it blends in better? Strange design decision.

(via Engadget)