I have wondered about the CF roof from BMW and if it would fade too.
If you read about the new ZR1 Vette, you'll see that GM has developed a very expensive liquid they apply to the surface of the CF parts on the ZR1 to protect it and keep it looking new under the sun's harmful rays.
I've never heard that about any other CF parts maker and wonder how the parts will hold up over time.
2008 E92 M3 Silverstone II
2006 MB G500 Gelandewagen Irridium Silver
2006 MB SL500 Irridium Silver (wife's)