Question On Ceramic In J12

I am klutz and have banged that poor watch a zillion times, so far it is just as gorgeous as the day I bought it. Hope I haven't jinxed myself lol. No problems with it!!:tup:
 
I've asked a few times but no answer yet. Does the white ceramic turn yellow over time? How long has this watch been out?

I have had my white one for a little more than one year and it has not changed colors. I remember seeing the ceramic watches for the first time in 2005 - but I'm sure they had been out for some years before that.