From #10554
> I can see there being space for some kind of new sequence that tells
the terminal that "hey, I want a semantic palette" or something, that is
better adjusted to themes automatically. But, I don't think we should
this by default.
> So my concrete proposal is to eliminate the inversion and bg => fg
ramp and do a more typical dark => light ramp (still taking into account
bg/fg, but keeping 16 black and 231 white). I think this is the only way
we can really make this a default on feature. I think this would address
all the negative reactions we've gotten to it.
This adds a new `palette-harmonious`, disabled by default, which allows
generated light themes to be inverted.
0eaf77da5f