I'm not speaking about hieroglyphs, even if they are perfectly readable in monochrome on monuments.
I was just saying that colorful **emojis** are just a nuisance and colors in them do not add any semantic value (except possibly flags, skin tones were added only to avoid a never-ending battle on ethnic biases in implementations, but even there the disambiguation should make the country name readable and accessible, and for skin tones most of the time they are not meaningful at all!) except making them more visible and in fact look spamming and needlessly distracting. Given that emojis are extremely ambiguous, unreadable and mean actually everything and look very different across implementations, their colorful aspect is also not semantically useful. On the opposite, colored in Arabic or hieroglyph texts is a a useful emphasize and sometimes semantically significant (some rare old scripts also used dictinctive colors): we are in a case similar to encoded semantic variants for mathematics symbols. But here again color cause a severe problem of accessibility and rendering on various surfaces (e.g. is the paper/screen white or black ? if you cannot see the encoded color correctly and it is interpreted verbatim, the text will not be readable at all; what is really needed is a set of symbolic colors: normal color, color vaiant 1, color variant 2, and Unicode can perfectly encode these as combining diacritics !) 2018-02-21 20:54 GMT+01:00 Richard Wordingham via Unicode < unicode@unicode.org>: > On Wed, 21 Feb 2018 16:28:14 +0100 > Philippe Verdy via Unicode <unicode@unicode.org> wrote: > > > I even hope that there will be a setting in all browsers, OS'es, > > mobiles, and apps to refuse any colorful rendering, and just render > > them as monochromatic symbols. In summary, COMPLETETY DISABLE the > > colorful extensions of OpenType made for them. > > But hieroglyphs look so much better in colour! What's more, they were > meant to be read in colour. If you want monochrome, you should make do > with hieratic! > > On a more practical level, I've made a font that colours subscript coda > consonants differently to subscript onset consonants for the purpose of > proof-reading Northern Thai text. It was a pleasant surprise to see > colour-coded suggested spelling corrections when I used it on Firefox. > I had installed the spell-checker for LibreOffice, which currently > lacks the colour capability, but Firefox helped itself to it. > > So you may not like emoji, but the colour extensions have perfectly > good uses. > > Richard. >