Spit1s were around for such a short time, that by the time new paint schemes came out (or were needed) the spit1s were gone and Spits 2 on up were around.
The only thing you could do with a spit1 is to take the current scheme, negate it. Take the current scheme, flip it, and then take the flipped scheme and negate it (there were only 4 schemes, if I remember, all were nearly identical, just mirrored or negated (swap brown for green) if needed).
So basically there's nothing to skin.
EDIT: Consider that right after the BOB the Spit2 started coming out. Also consider that the plane had only been around since the battle of France, which wasn't that long before the Battle of Britain. It was a short-lived variant.