I'm not sure it's worth the risk. It could turn into a big mess. Or turn out good at first and then later on start to crack. Just buy some 2-tone seats on e-bay if you want that style so bad. They are out there. By the way, that paint is also sold through J.C.Whitney automotive.
Here is the link, there is a customer review on there and it does sound rather promising.
http://www.jcwhitney.com/autoparts/Product/tf-Browse/s-10101/Pr-p_Product.CATENTRY_ID:2010283/p-2010283/N-111+10202+600016873/c-10102