Here you can find some photos which could give you an impression how the "race version" looks like:
http://www.zone442.com/
Go to the main page, scroll down a bit and click "
KAMPENOUHT - GRAND PRIX DE BELGIQUE 2006". There you can find a few photos like this one of a Masami-esque painted car with the Astroturf at least a little bit distinguishable :
http://www.zone442.com/images/GPB2006/GPB060137.jpg
Astroturf is kinda like a very short fibre brushed to one side. Like a pipe cleaner, but of course very much stronger, shorter and lying down. Not like a carpet with woven endings or what, itīs rather open at the top. At least itīs about this way in Kampenhout.