While it's nothing more than a placebo, believe it or not, some people actually argue over which color M&Ms taste better. If the latter speaks to your spirit and you're tired of manually filtering unwanted sweets from your holiday spread, then you might be in luck. A crafty tinkerer who goes by the YouTube handle "Nxt1engineer" has shared a clever contraption that sorts M&Ms by shade. Using tone-detecting sensors, this Lego-powered machine separates and dispenses the popular candy-coated snack, ensuring that everyone receives their favorite hue without any fuss. It's not entirely clear how you might be able to bring this awesome apparatus home, but you can at least see it in action -- check it out in the video after the break.