LOL at all the guys with no post counts thumping their "no white letters" chests. I'd almost guess you joined just to voice your opinions.
White letters are not drastic especially on the larger sized tires. Its not like its a 35 series tire with white lettering on it. Also who give a crap, its not your vehicle, I'm sure any of us could find something on your ride that we think looks like crap. Give it a rest.
To the original poster, you are going to want to look into shorter springs, new shocks, sway bar links and possibly control arms if you want to lower your Jeep. It wont be cheap but you may be able to offset some of that cost by selling when you currently have.