I can see why you might think that, but that's just an effect of the way it was highlighted in the artwork. If you look closely at Alolan Meowth in the trailer, you can see that its hands are the same color as its body. I got it right the first time.
If you wanted to nitpick a Pokemon for being off-model, why not pick on my pictures of Alolan Raichu instead? I didn't include the little yellow stripes on its hands and feet because I didn't notice them. Scandalous!