I read that someone suggested that it would be nice to have a red-ish Exegol.
Just a very quick test.
https://vimeo.com/432638321
pw: fanedit
I don’t like the over the top blue planet look, but I agree with others who say that there’s already Korriban as a red Sith planet.
If someone doesn’t like that blue tone, I think the only solution is to change Exegol into a dark, black/grey planet.