Of course, all dogs are color-blind, not just fluffy white dogs like a Samoyed, Japanese Spitz or even the Kishu. :)
But this apparent little worry about what present to buy for your dog is part of the bigger picture during the holidays, in gift-buying for everyone: Will the giftee really appreciate, or understand, what you've chosen to give them? And it seems like what one chooses to give says more about the giver than the person receiving it. Sometimes it seems easier not to give anything at all...
But please, don't take it out on your dog. He or she will be thrilled to bits with anything you hand him, I promise. Good times.
Here's another cartoon about dogs you might enjoy.