I've heard of the problem, yes.
The closer a color is to the sun's colors, red, yellows, etc, the faster it will fad.
IE: don't ever get a red tattoo unless you want it to fade.
Personally, I wouldn't put anything TenzoR in my car, let alone a seat with its flash writing right there.
Get a black one at that, less flashy, yet still serving its purpose. No worries about fading really.