The big thing Quossom, is that you can tell your color groups apart. However you do that, is up to you. Some of us can swap colors in and out without much fuss. My husband, on the other side just cannot visualize what "exactly like that red quilt but in blue" means to me. He just can't get it. Can't put clothes together unless he sees them on a mannequin or jeans + top of some sort... Same thing with looking at houses, he just can't see the basic room without the stuff in it or the color it already is.
I write in big bold colored marker my color changes on my print outs. Bonnnie designed Old Town (last year) to be made with what turned into Blue stars but I was set on using a particular fabric in my stash and blue did not play well. Ended up with Yellow = Blue written all over my notes. I also deal with vision issues -- I write a large (full page sized) note for each week clue saying what colors I am using, along with those translations and tape that to the wall above my desk so I can look and see easily without going to my notebook.