I cannot open the O-ring guide on my IPAD, but I can tell you with 100% certainty, there is not ONE material that is compatible with all of the fluids (including air and vacuum) in an automobile. Using just one material is foolish. Not sure what the green is and there are not necessarily standards for color. You really can’t go by color alone.There are super compounds that may get close, but why not use the best suited material for the longest life?
Using a compatibility chart is easy and works every time. Probably would be a good idea to post one of these charts on this site in the Tech manual as this topic frequently comes up. I have been around rubber and urethane for 40 years now, and there are some industry secrets, but using a compatibility chart is a no-brainer.