Don’t know. i have Blacks, and I think he used Triangles or similar back in the day.
I just took 2 Blacks over to Scott Gilmore, who Richard authorized to work on his cues. I got one back (refinish and new tip on one shaft), a tip replaced on a Sneaky Pete I had made about 30 years ago, and ordered a new cue from Scott (hits very similar to Richard’s cues).
I asked about the tips when I picked up the last one. Scott said Richard orders tips custom pressed to his specifications. These days, when a batch comes in, he calls Scott and they sort through them. They throw some away, and sort the others. They split the order. He did not elaborate on the criteria used to sort them.