Sure but you are not in front of it so you can't see it, and it changes the minute you do. So has no color unless you want to call the shiny reflecting backing a color, but it it were anything other then clear, it would distort what ever color we are reflecting and throw it off. I'm starting to get a headache... what color would a headache be?
I don't deal with mirrors anymore. It is a new and absolutely effective weight loss move. I imagine that I am lighter by 10 pounds or whatever that is in GB, (Stone, kg or whatever silly things you folks use to measure weight) every time I walk by where my mirror once stood in all it's colorless glory.