The mystery of Donald Trump’s ‘photoshopped’ tan-face picture

In both pictures, it is clear that the front of Trump's face is darker than his neck, hairline and near his ears. Is he slightly darker in the photo that was tweeted than in the original? Maybe? But that also could be simply the background -- green vs. black -- that is different. Here's what we do know from looking at the Reynolds image: Trump's face is two different shades. Is it heavy makeup? Is it a tan?