I have both of the red pads but I haven't used either to put collinite on yet but I use the euro red CCS white CCS for hand polishing and like them, I bought these applicators for this (hand polish and compound). I plan on use the red round applicator for wax, just haven't used it yet and I would recommend being careful with how much you wax you use with it. I noticed when polishing with the euro pads that depending on hand pressure you can get a build up of material in those "pores" which could come out heavier than you want at some point. Not a huge problem if you notice and correct but could result in some thick spots of wax.
I have used the little yellow pads for collinite though and I washed them with dawn dish soap afterwards based on the experience I had with my MF pad system:
When I used the Megs MF system I also used Detailer's Pro Series Polishing Pad Rejuvenator to clean the pads and found that it did an okay job on the compound pad but did very little for the wax pad. The white wax pad was still stained completely gray after scrubbing. I used a little dawn dish soap and the pad is white again. I usually rinse once or twice after any signs of soap have stopped coming out, let it rest while I clean the other pads, and then rinse it again to make sure there is no soap left. If you were worried about soap residue you could probably follow up with Detailer's Pro Series Polishing Pad Rejuvenator bath after using the dawn to cut the wax, I have done this didn't notice much change in the pad and I am not sure there was any soap left in the pad to get rid of but it couldn't hurt.