`bash
if [ "$(pidof picom)" ];
then
    pkill picom
fi
X=$(printf "0x%x\n" $(xdotool getactivewindow))
picom --color-invert-include "id=$X" &

~$ picom
[ 11/20/22 23:52:28.630 session_init FATAL ERROR ] Another composite manager is already running

: libconfig: signature from "David Runge " is invalid
:: File /var/cache/pacman/pkg/libconfig-1.7.3-1-x86_64.pkg.tar.zst is corrupted (invalid or corrupted package (PGP signature)).
Do you want to delete it? [Y/n] y
error: ninja: signature from "Anatol Pomozov (Arch Linux developer account) " is invalid
:: File /var/cache/pacman/pkg/ninja-1.11.0-1-x86_64.pkg.tar.zst is corrupted (invalid or corrupted package (PGP signature)).
Do you want to delete it? [Y/n] y
error: docbook-xml: signature from "Felix Yan " is invalid
:: File /var/cache/pacman/pkg/docbook-xml-4.5-9-any.pkg.tar.zst is corrupted (invalid or corrupted package (PGP signature)).
Do you want to delete it? [Y/n] y
error: asciidoc: signature from "Caleb Maclennan " is invalid
:: File /var/cache/pacman/pkg/asciidoc-10.2.0-1-any.pkg.tar.zst is corrupted (invalid or corrupted package (PGP signature)).
Do you want to delete it? [Y/n] y
error: uthash: signature from "Santiago Torres-Arias " is invalid
:: File /var/cache/pacman/pkg/uthash-2.3.0-1-any.pkg.tar.zst is corrupted (invalid or corrupted package (PGP signature)).
Do you want to delete it? [Y/n] y
error: failed to commit transaction (invalid or corrupted package (PGP signature))
Errors occurred, no packages were upgraded.
error: target not found: ninja
error: target not found: meson
error: target not found: docbook-xml
error: target not found: docbook-xsl
error: target not found: asciidoc
error: target not found: uthash
 -> error installing repo packages

$mod+Shift+P exec killall picom; sleep 0.2; picom