Hello again. What textures have you overwritten? It looks like it's the base colour for the body but It's hard to tell from just a screenshot. May I see your skin materials file?
It took me almost an hour to find it but there's only one tiny issue. This follows on from what I said in the Development Screens thread, and I may have perhaps made it a little confusing - my bad. Under "Stages" in the first set of curved brackets, consider that 'layer 1', the baseColorMap needs to be there - you don't need to change that since those are for the base textures for the actual model. The second set of curved brackets can be considered 'layer 2', imagine it as a wrap going over the paint from 'layer 1', that's where your palette goes - and it's there, and it works, that's fine. I'd strongly advise you to rename your .jbeam something other than "van.jbeam" because it's awfully vague might cause issues with other mods - consider "van_skin_twotonealt.jbeam" instead or something a little more unique to your mod (I usually name the .jbeam the exact same as the skin - "van_skin_whatever.color.png" & "van_skin_whatever.jbeam" for example.) One other thing you should totally do is clear your cache too - if there aren't any glaring issues sometimes its a case of old cached textures still loading instead of your new ones.
No problem. I've been making colourable skins myself recently and it took me a while to figure out how palettes work for the first time. If any issues pop up later down the line (in regards to skins at least) I'd be happy to help again, but that shouldn't be the case hopefully.