What do vivid colors, tie-dye, and asymmetrical hemlines all have in common? They're all in the category of hottest Spring '10 trends, of course. But another trend has just been initiated; and it seems to be sweeping the fashion scene faster than any trend before it. Click through Vogue's online look-book and Spring shopping guide to find a myriad of patterns and ideas for possible color and clothing combinations. Wearing a simple … more