I have spoken to Liquid Leather about this as I have a very small scratch where the colour has come off but the leather itself is not scatched. Their products may be good but their customer attitude leaves a lot to be desired. They don't seem to understand that there is no easily removeable piece to send them for matching, and I'm not going to cut a piece off or send them the smaller back seat base!
I plan to drive to their premises, so that they can see the colour (assuming that they will appreciate my efforts and match it there and then). If not, I will leave a Reebok trainer with them as the colour is identical - or as a last resort, cut the tab off the back of the heel and post it.
If their products weren't so good, I would have given up on this plan long ago since the scratch is only about 15mm, and their attitude is positively unhelpful.
I'm assuming you're looking for a code as you too have a scratch you need to recolour. Will let you know how I get on if you can do likewise e.g. you've got a code elsewhere.