The hands-on area for the new iPods and iTunes 8 was crowded, but we had the opportunity to test the new iPod nanos and iPod touches. Pictures are coming imminently, as are videos. Colors: We had the chance to do straight color comparisons between all of the new iPod nanos and the older second- and third-generation colors. The new shades have reverted to the second-generation colors, but with only slight differences. Most different is the silver version,…