We thought Mango's nectar was already pretty damn sweet, but a group of young developers recently took up the challenge to make the next generation Windows Phone 7 experience even more delicious. Following up on last year's 'Rockstar' competition, Microsoft asked students to submit Mango app prototypes via Twitter, with the promise of developers phones for the top entries. Among the top 20 #WPAppItUp submissions are a program that helps the colorblind figure out what shade of puce they're peeping
