Is there a way to “keep” a glyph black? It seems that unless a glyph has a certain “level” of colour in it, the glyph is converted to a “normal” monochrome glyph which MacOS will invert to white when rendering text in night mode.
This glyph needs to remain black like some of the Apple emoji, like .
I’ve tried adding a single grey level but that’s not enough, I had to add not just a little colour, but a significant coloration before it would keep the colour.
So what’s the heuristic here that determines if the glyph is automatically converted to a “normal” non colour glyph?
Edit: Debugging progress ~>
So I’ve kept debugging this a bit more and the cutoff for adding red to an rgb colour before it “keeps” the colour in the glyph is 40. So R=40, G=0,B=0 is the blackest you can get a solid colour fill before it will switch to using standard monochrome font paths to build up the glyph.