Earlybird [Thunderbird] 47.0a2 already shows full colored emojis.
Earlybird 47.0 alpha 2
Hmph… I think I've found the answer:
Moonchild wrote:Fonts are fonts. Their color should be determined by font formatting, not the font itself. Fonts are made up of glyphs. Glyphs are, by definition and purpose, monochrome. If you want to use vector fonts in multiple colors, then what you want is a vector image format.
So the answer to my suggestion will likely be: No, emojis will be monochrome in FossaMail.