Question about wiring diagrams (wire colours) from a complete amateur

[johnc]

Hi folks,
Apologies if this has been covered, I couldnt find anything in the forum.
I'm in the process of setting up the wiring for my ES-12G.
I'm going off the Pitbull diagram (2 humbucker, 4 pots, 3 way switch)
I've noticed there is a red wire shown running from switch to bridge volume
and a green wire running from neck volume to neck tone
(This is the noob question). Are all the insulated wires the same?
ie, as I dont have a red or green wire can I use another colour?
thanks
john