I'd love an option or hairstyle that has graying temples for a more mature or salt and pepper hairstyle look for genesis... Sort of ala Reed Richards from fantastic 4.
I'd recommend Neftis' Mature Mark Hair http://www.daz3d.com/shop/mature-mark-hair.
It's currently in Neftis' PA sale at 50% off. It's not Genesis' hair, but you just drop it on top of Genesis' head to parent it and move the Y Translate dial until it lands on his head. Here it is on M5