Frost Blue the most common color in 68?

My 68 barracuda was Frost Blue (same car I am trying to buy back now). I have to say I've seen that color probably more than any 1 other color I can think of. Not only that, but even on non mopars that color seemed to be very popular. I'm almost 40, so I wasn't alive at that time, but I'm guessing it was just a very popular color at that time.

Can anyone think of a more commonly used color?