Pigments have different chemical make up and can require varied addition amounts to get the desired color. White is usually titanium dioxide, which is metallic and needs more to get the white they want. The green pigment is probably very effective in small amounts, so it doesn’t add much weight. Black and gray could have carbon black.
The colorant suppliers have pallets that they work with and provide the materials to the molding companies to get the color match. In molding, the colorant is blended with the plastic or rubber in a hopper prior to melting and molding. In plastics, it is usually a pigment because the color is dispersed and is not really soluble in the plastic. Dyes dissolve and are used in more fluid applications. They are either water or oil soluble depending on the product.
Birdied 11 today playing with @Divot Master. Hit one of the only good drives I hit all day to the right side of a split fairway that gave me a great angle into a long but narrow green with a false front. Hit a pitch shot cleanly but long, 15' past the hole, then made the putt.
It’s funny cause this is the year I’m starting to get older and wiser (turn 36 next week...age is relative) and stopped doing full range sessions for like an hour before play. Hit just enough shots to get comfortable and see what shot shape I brought that day and then 5-10 minutes putting to figure out speed and hit a few 5 footers to gain confidence.