They would do nothing for me.
High-color terminals and apps beak out of the 16-color limit. Changing my “color theme” when someone wants to look at my screen sounds like more work than typing NO_COLOR=1. If I need to look at someone else’s screen what can I possibly do about their choice of colors and terminal emulators?
* All color schemes shall have the 15 colors that are not the background contrast well with the background.
* Terminal applications shall not specify white or black as the foreground color.
* Terminal applications shall not specify the background color.
* Terminal applications shall not output escape codes when piping or otherwise being used programmatically.
TFA seems to have pretty serious issues with color in general, so I'm curious to know from those here if the rules above would address your complaints or if there's something more going on that I'm just missing.