Hi , first off , I'm sorry to remind : this top is : Share your Windows >Vista< experience! and not about "the look of 7".
There's too much to write about the differencies . Some of the ugliest things about Win 7 are : fonts (yes that "true" type ones) - washed out and blurry , oversaturated UI colours , like for ravers at the acid party. I always had the best monitors available , so I can tell. Also , sound , oh boy. It's nowhere near Vista's punchy and sharp audio quality . I have Asus D2 , so I can also tell the difference . Win 7 has fat , thick , flat , ugly taskbar . etc , etc , etc .
P.S. Compare Vista's wonderful orb and Win 7 (I don't even know how to name that "acid something").