When you guys start the wiring process, what do you buy for wire? Do you buy a whole spool of each size of wire in a variety of colors? This could get rather expensive. Do you buy just a few basic colors in several sizes and then use wire labels to identify wires? Or do you just buy wire by the foot as needed in the required sizes and colors? This could be rather slow. Help! Never wired anything before other than my house.

Jim