Howbout -

It took me a minute to understand what you were getting at, and I think that you are doing fine. Here is my novice take on it, and I'm sure the experts will slap me around for any inconsistencies..

a) FC = Free Chlorine *Good Stuff doing sanitation duty*
CC = Combined Chlorine *Not so Good Stuff locked up and not working*
TC = Total Chlorine *Total of Good Stuff (FC) and Not so Good Stuff (CC)*

b) Best case, as almost all of my readings have been, is that your FC = 2+, and CC = 0 ! That means the TC=FC so the colors will be the same.

c) My best advice (again novice) is to use the FC number to determine if you have the chlorine count where you want it. Only worry about the CC number if you have some reason to check, AND it is anything but 0 then you probably need to shock the pool.

At least that's my view of the world...