i'm with Ken on the dark grey. IMO, they're the best, because they are the closest thing to black, while still being immediately, recognizably different. there's reasons that standard Black handled models outsell any number of fancy colors: they are a decent color for those tactical situations, which is one of the matriarch's definate design factors, plus they conceal/blend in well with dark clothing/pants.
a dark enough grey would still have these attributes, but be different, and still aesthetically pleasing.
you could go to any number of colors, and no disrespect intended, they are just bad ideas. i don't mind OD or brown handles so much, but even they look weird, IMO. any other color, IMO, is just gaudy. i think grey is a nice, neutral, tactical color.
i would probably still buy one, even in a color i don't like, assuming it's not yellow, or orange, etc. but offer it in grey-woohah! put me down for several.
Stay Sharp,
Joe S.