Not 100% sure what you mean by that (cue my brain being stupid whenever times are rough)
It's just that when DSP's chars don't have "canon" skin colors I really could care less if people give them different skin colors as long as actual effort is put into it (e.g. the Wadda above making her "more" sea-themed). As opposed to a bland drawing of her that would be the same design, but with black skin.
My point about the ashy skin though was mainly that when DSP DOES give his characters real skintones, the shades he uses are rather dull, and I'd put the ashiness of the skin in that redesign on the count of the official style
Anyway, that Mettaton drawing is gross. Doesn't even look like a man anymore, just a slob