I must really be retarded, cause I can't find it.
40A-R Pink O-Rings
These are the same as the blue o-rings sold at WASDKeyboards. They really stop actuation quickly; it feels like they stop at the click - almost mid click. They feel the same as the red o-rings when you bottom out. They feel nice but I really dislike how much actuation is cutoff. - Talking about how they feel.
The videos do not directly compare the red and pinks. They compare one set of o-rings vs none.
At the bottom of the page, you do a quick summary of each of them, except the pink one is missing. You mentionned the Reds have great sound reduction, but no mention about the pink ones.
So I would think, in my opinion, that the pink ones offer just as good noise reduction, if not better? Being squishy and thicker?
The o-rings on my G710+ are 2mm thick, but quite loud. Maybe they are too hard?