Sony MDR AS200 vs AS210: what's the difference?

Does anybody know the difference between the AS200 and AS210 (not AS210AP which additionally has a microphone)? They have all the same specs as far as I can tell besides different color options.

As a side note, my 2 cents on these headphones since I used to have a pair of Sony headphones similar to this. They never fell OFF my ear but they do not provide any seal and they always slowly slipped out of my ear canal as I was working out and I’d have to shove them back in in order to keep decent bass pumping.