played the yellow/black all winter - easily found in dormant rough. Motivates you to play well so you don't look like a hack with a gimmick ball.
white/red is harder to find than all white - so count that out. cant imagine white/green is a good idea. Only worse ball to find are the all-blue callaway SS.
Give me white/yellow - II think that would be a slightly subtler ball I could play all season.