The difference is that nobody actually works in a head mask and full body suit, unless they’re wearing PPE that happens to obscure those things. Covering 100% of your skin is very awkward and uncomfortable. You wouldn’t ever want to do that unless you needed to for some other reason.

So let me propose another example that takes place in a workplace setting where everyone has already been hired. Let’s say it’s a welding shop where the workers are issued welding helmets, welding gloves, and protective long-sleeved overshirts. All of this PPE is provided by the shop. And let’s say that for several years, the PPE is all in the same standardized color, which is yellow because that’s the primary color of the company logo. One day the welding shop decides that, rather than just wearing the yellow PPE, they’re going to issue employees color-coded PPE that approximately matches their natural skin tone if that’s what they’d prefer. Regardless of whether you think it’s a good or bad idea, you can’t deny that such a policy places a lot of significance on skin color.