Shopbop has a cool new feature that allows you to browse runway looks and then click directly to the items for purchase.
After you choose the designer, there are about 5 or 6 looks direct from the runway. Not all items are available though, like below, the jacket and boots are available but not the leggings.
As I was doing my Gucci update yesterday I was thinking about the color yellow since they're featuring that color in their spring/summer line. We've been seeing yellow a lot more in the last year or so. Yellow on the red carpets was huge in 2007. Reece Witherspoon in Nina Ricci, Angelina Jolie in Emanuel Ungaro, Kate Hudson in Dior, Thandie Newton in Fendi, Kerry Washington in Oscar de la Renta, etc. etc.
For us mere mortals, yellow is popping up a lot this Spring. Take a look at J. Crew's spring preview catalog that they shot in Rome (don't get me started Rome... that's an entry of its own), it's full of yellow. Like the really cute Fontana dress, see below. 
Net-a-porter is featuring yellow as the "Y" in their 2008 A to Z of Spring Fashion.
I have to admit as a person who pretty much lives in black, charcoal and denim; I tend to be slow in adopting color. But I think I'm going to get some yellow this Spring!