Change kitty terminal's background image with a shortcut

change_kitty_background.sh

#!/usr/bin/bash

kitty_config="$HOME/.config/kitty/"
kitty_conf_file="$HOME/.config/kitty/kitty.conf"

# Change these as per your liking
dark_theme="Catppuccin-Mocha"
light_theme="Catppuccin-Latte"

cd "$kitty_config" || exit 1

dark_mode=true

rg "$dark_theme" &>/dev/null

status="$?"

if [[ $status -ne 0 ]]; then
	dark_mode=false
fi

if [[ "$dark_mode" = true ]]; then
	sed -i "s#include $dark_theme#include $light_theme# " "$kitty_conf_file"
else
	sed -i "s#include $light_theme#include $dark_theme#" "$kitty_conf_file"
fi

# Press 'Ctrl + Shift + F5' to reload kitty.conf for the change to take effect. ydotool requires ydotoold to be running, you can use a user systemd service to always run ydotoold.
ydotool key 29:1 42:1 63:1 29:0 42:0 63:0

The 'include' adds the theme files, given they are on the same level as kitty.conf. You can get this theme here.

I use the fish-shell and have set up a shortcut to execute this script on Ctrl + K

bind \cK 'change_kitty_background'