If SGR 38;5;10 is not producing green, which it isn't, then it must be following your palette. My educated guess is that for some reason it believes that it sh

If SGR 38;5;10 is not producing green, which it isn't, then it must be following your palette. My educated guess is that for some reason it believes that it should lighten the palette-specified colours from 8 to 15, and it's lightening your black to a very dark grey.