Emoji’s are not showing in cells in color (Windows)
Whether or not emoji are displayed in color on Windows systems has to do with which OS, browser, and fonts you have installed. For instance, on the Windows 7 PC I am currently using, emoji appear in black-and-white in Chrome. In Firefox, they appear in color — but it’s only a simplified color display, often monochromatic, as opposed to the detailed, multi-color emoji characters one sees under Windows 10. (I see I’m running three emoji fonts at the moment — EmojiOne Color Regular, Noto Emoji Regular, and Segoe UI Emoji Regular — so I’m not sure which is being used by either browser. Seemingly, Chrome uses a different font than Firefox, as Chrome only displays emojis through the Unicode 6.0 definition, while Firefox displays Unicode 7.0 characters.)
'color emoji [OS] [browser]' for instructions on how to configure your particular set-up for color emojis.