I wondered this when they started to become a thing a little while back. For me, it was actually an annoying feature because color is how we have always identified different models of switch, so now there's an extra layer of confusion because the color may mean the actual color of the plastic or the kind of switch (No, it's a "red blue", not a "blue red"). Maybe it's not as much of an issue going forward since new switches' names seem to be diverging from that convention (Holy Panda, Halos, etc.).