The color-coding for multi-branches was discarded with the 1971 NEC, although the colors white, natural gray, green and green with yellow stripes were all still reserved,
and prohibited for Ungrounded wires.
The shade-coding for multi-branches changed into discarded with the 1971 nec, despite the fact that the colors white, natural grey, green and green with yellow stripes were all nonetheless reserved,
and prohibited for Ungrounded wires.