That ia a good idea of keeping track of all your colors - I do the same. I always print out a copy of the design with thread colors for future reference also. I have a 3 ring binder I keep mine in, or else they end up all over the place and you can't find one when needed (ask me how I know). Since you may not have software you will want to do as the other lady suggested and write down the design and colors of thread.
Also, when just starting out try to do a design without a lot of color changes so you can get used to the process. If you pick one with way too many you may get frustrated (no instant gratification). One of my machines is a 6 needle and I still try to consolidate colors.