Always white, marked with two black dots & a line on the sidestamp. I find the other colors harder to see sometimes .... especially on bright sunny days. (also doesn't bode well that I'm getting old & my eyesight sucks!) Then you lose them in the leaves of the fall as well.
always white. i tried a short stint with yellow b330-rx and i swear they didn't perform as well as their white counterparts. man that sounded racist...
White pretty always. I have used other colors at times, but sometimes the other colors present their own problems, like if the rough is dotted with dandelions.