permitted hot colors for residential wiring
I'm rewiring about 80% of my house (200A 120v). Most of the conduit is installed (code requirement) and I'll be starting to pull wires next week. The most cicuits in any conduit branch will be four.
I'll obviously be using White and Gray for Neutrals and Green for ground
I'd like to use different colors to easily identify the circuits in the same conduit (lots of pigtails). Is it OK (code-wise) to use *any* other color with the exception of balck, white, gray and green for a hot?
For example, my local Home Depot has Purple, Red, Orange and Yellow. Are these OK to use? (I know some colors have meaning in 3-phase, etc., but I'm assuming it doesn't matter for residential)