Dreamon,
Have a look at the Gliptone website.
I have just purchased some scratch remover from them (250ml, for £16.50).
It can be brushed on or sprayed, and I believe that it can be used to restore seats.
The colour will be matched exactly for you.
Fortunately I only live 20 miles away so was able to drop off a headrest and leave it with them to match.
