Méh, to the whole "zombie" look for DS characters in Kotor. Since they're powerfull in the force they make themselves look like whatever they want. I'dd say DS users are often "ugly" because of their aggressive lifestyle.
Choking, lighting throwing, duelling with other DS or LS users; they get scars and so on.
They're just more abusive on their bodies, wearing it down. Still shouldn't make you look like a bloodless, white/grey ghoul