In electrical industry, red used to mean powered or hot or dangerous, green unpowered or harmless.

All earth-leakage breakers in my area are like this: https://en.m.wikipedia.org/wiki/File:Schneider_Electric_A9D3... https://i.ebayimg.com/images/g/sHYAAOSwu2ZkBk5~/s-l960.webp

Electronics industry have diverged.