[leaving 'freetype-devel' in the CC] >> Let's assume that you can't discern colors A and B, where both map to >> exactly the same gray value C (or to almost identical values). If a >> glyph uses those two colours exclusively, you will have problems with >> both a colour and a gray-level version of it. > > Oh, I see. Yes, I would indeed have trouble using such a font. But > in that case I’m tempted to blame the designer: if they can’t be > bothered to account for colourblindness, FreeType can’t do very much > to compensate for that! > > (Unless it can? Maybe there’s scope to allow the user to remap > colours, or to switch between the two greyscale modes Hin-Tak > mentioned, in much the same way that they can, say, select hinting > modes. But I don’t know how feasible this would be.)
Different colour schemes are supported; the question is about defaults. For example, let's assume that a font contains color schemes A and B, the latter suitable for (most) color-blind people. Let's further assume that scheme A doesn't render well on a grayscale device because of identical grayscale values. Does COLRv1 contain any information to quickly decide which color scheme should be used for grayscale rendering? Werner