My 1950s vintage house has the armored flexible conduit. Most of the circuits have the standard black/hot white/neutral color scheme. For some reason, the 20A circuit I want to modify uses a GREEN 12-gauge wire all the way from the breaker to the hot outlet terminal in my garage wall. I plan on changing that outlet to a double outlet to eliminate the need for extention cords and/or adapters, and also add another single outlet 10 feet away. That same circuit feeds some outlets in my living room, I assume via a junction box somewhere in the attic. Thankfully, they did use white for the neutral! Here's what I'm wondering:
Should I continue with the green/hot color scheme for that circuit by putting a wire nut and green pigtails on the green wire inside the new double outlet box, and run a longer green wire from the wire nut to the new single outlet, or simply change to the standard black/hot wiring exiting the wire nut? The latter option would have the green/ hot wire coming into the wire nut in the new double outlet box, two black pigtails feeding the hot sides of the two new outlets, and a longer black wire coming out of the wire nut to feed the new single outlet further along the wall. The neutral, in either case, would be the standard white.
I can see the advantage of having the entire circuit the same color (green), but it looks a little odd to have a green wire feeding the hot side of the outlet(s) AND another short green wire grounding the outlet to the sheet metal screw in the back of the outlet box.
No one except ME will probably ever see inside the outlet box, but since it's semi-permanent I'd like to do it right.