Not a big fan of red Exegol. Looks less unnatural, but it is very reminiscent of Mustafar. I think stormy blue Exegol compliments Palpatine’s Force lightning nicely, but maybe that’s just me. I do like the increasd brightness though. Being able to see is always a priority.
What if Exegol was a rainbow planet that shifted through the entire spectrum at a slow steady rate? It’d be kinda silly (okay, really silly), but neat to see. Maybe we can give it a try.