PS, it was a genius idea of yours to reduce it to four colours, imagine what it would have been like if we tried to agree the original seven colours.
Actually I reduced it to 2 initially but still, it is 2^48 combinations to fight for ;-). And yeah, I expected a long discussion here. But seriously, in the next release nobody will notice Scintilla 5, updated ctags, meson build, etc., but everybody will see the color changes made here so better not to screw up much.