Possible Duplicate:
Stack Overflow redesign?

Newbie here. I know this is of little consequence, but why can't/don't we have a CSS theme or UI that looks better?

It's great already (thanks @Jin and is doesn't distract you at all, but I still feel that pang of jealousy when I visit sites like Programmers or Math or English or Ask Ubuntu?

Is the reason that it'll take too much time for such a trivial (by trivial, I refer to the perceptible gain, NOT the task of creating a new UI) or non-consequential thing?