Aside from a very desirable white edition, Nokia's Lumia 900 hasn't quite caught up with the color explosion that characterized the Lumia 800's launch. It looks like it's getting there, with a magenta variant spotted at Finnish retailer, Gigantti. At the moment, availability is posited for the vague area of May -- matching those mid-month dates we've been hearing -- but the site is still taking pre-orders ahead