火狐能显示 SVGinOT Font

https://github.com/eosrei/emojione-color-font

https://hacks.mozilla.org/2014/10/svg-colors-in-opentype-fonts/

SVG in Open Type is a standard by Adobe and Mozilla for color OpenType and Open Font Format fonts. It allows font creators to embed complete SVG files within a font enabling full color and even animations. There are more details in the SVGinOT proposal and the OpenType SVG table specifications.