I really, really hope you say this to every single person you see tanning at the pool or on the beach. Or venturing outside wearing anything less than a parka.
Spoilers: skin color changes when exposed to sunlight and UV rays. It is a natural biological process and to utilize that process does not make one racist or “inconsiderate” of racism, any more than digesting milk makes one “inconsiderate” of those who are lactose-intolerant.
(Note, I’m not comparing being lactose-intolerant to suffering racism. But skin darkening when exposed to UV rays is a biological reaction so unless you’re wearing a parka/burka/wetsuit/etc. every time you go outside in the summer, it’s going to happen. That doesn’t make you a racist or inconsiderate of those who have suffered from racism due to their skin color. And laying out in the sun because it feels good on your skin doesn’t make you a racist, either.)