Shuffle meets mood ring. You could drop all your Sabbath and miscellaneous metal on black, Green Day and various faux-punk on green, and your Clannad and other soothing tunes on a nice dreamy blue. Then, just touch that section of the player and let the music flow. The thing even has storage for two impossibly small Bluetooth earbuds (shown below) that can nestle within the center (aka the Munchkin/Timbit zone). While we generally hate being teased by fanciful concepts as much as you, but this one was developed as part of an internship at Samsung, meaning there might just be a chance it could come to fruition. Sorry, colorblind folks, you'll have to stick with other oddly shaped ways to play your tunes.