Given that it's the color of the season, you'd think that there'd be a song called Red Christmas.
Yeah, there's a parenthetical EP by The Killers, but that's not what we're talking about here.

Also, I'm aware that the song is just called "Heat Miser", but that wouldn't have been as amusing.

The color wheel above is, more or less, from the Magic: the Gathering game, where each colors have two ally color and two opposing colors. Over the years since I stopped playing it, they've elaborated on that, or so I hear.

Likewise, I stopped regularly reading comics before there was an entire color spectrum for Green Lantern, but I couldn't find a good way to illustrate R-O-Y-G-B-I-V along with Black and White (and white was needed for Bing's song). Moreover, there'd be a lot more blanks to fill in.