potbunker matte green balls.
They seem like they would be hard to see...............but obviously not. AND you almost always know which ball is yours. +1
I just switched to geezer yellow because:
1) I'm impatient and want to know which ball is mine
2) They are easier to find
3) Not as many seniors as I thought play yellow. They till prefer white
I played the Volvik Vivid matte green for years. It is not a grass green. More like goose crap and is easily discernable from a yellow ball at a long distance. It almost glows. The worst color ball I have ever seen was a Noodle that was purple. You could not see that sucker in the air and was very difficult to see on the ground. My bud quickly lost that one.