All my dice are blue, or white/crystal. That's a longstanding tradition that (I think) is fairly obvious to anyone who games with me. I still have most of the dice I bought myself when I was 13-14 (Zocci Dice!) some 30 years ago, and that's when the blue tradition began.
I did receive a gift once, of some teeny tiny pearl-white dice. I like them and they're in my set, but I rarely use them. I'd LOVE a set of Jumbo dice... (old eyes are the pits).
One of my players has a big box o dice and loves picking out a themed set for each PC she runs. We're about to start a pathfinder campaign playing twin sister characters with draconic bloodline (blue), so blue may become a character theme as well as a dice theme...