Color emoji on Arch Linux.

color-emoji-on-linux.sh

# create folders if does not exist
mkdir -p ~/.fonts
mkdir -p ~/.config/fontconfig/

# download noto color emoji font from https://www.google.com/get/noto/#emoji-zsye-color
# extract NotoColorEmoji.ttf file into ~/.fonts/

# create font config file
cat << 'EOF' > ~/.config/fontconfig/fonts.conf
<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE fontconfig SYSTEM "fonts.dtd">

<match>
 <test name="family"><string>sans-serif</string></test>
 <edit name="family" mode="prepend" binding="strong">
 <string>Noto Color Emoji</string>
 </edit>
 </match>

<match>
 <test name="family"><string>serif</string></test>
 <edit name="family" mode="prepend" binding="strong">
 <string>Noto Color Emoji</string>
 </edit>
 </match>

<match>
 <test name="family"><string>Apple Color Emoji</string></test>
 <edit name="family" mode="prepend" binding="strong">
 <string>Noto Color Emoji</string>
 </edit>
 </match>
EOF

# build font information cache files
fc-cache -f -v 

For someone lazy

wget -O- https://gist.github.com/himalay/5c404a5f6653cb35154ceb3a6c606211/raw/b6ca198357b458c0e7ecc1ae0352de93621f8b87/color-emoji-on-linux.sh | bash

use at your own risk