It used to be that when celebrities went out and got a tan, their biggest concern was looking too orange, or like an oompa-loompa. Nowadays, things are a little bit more touchy, with the rise of the term 'blackfishing' — it's like catfishing, but instead of pretending to be somebody you're not online, it's where you purposefully present yourself as black or racially ambiguous online through use of hairstyles, makeup, and yes, self-tanner.
This phenomenon is mostly directed at influencers, but there have been a few celebrities who have been accused of looking just a bit 'too black' in photos.