Vince

Change your `/home/esteban/snap` folder permision, Run it with sudo it'll install in root user folder

Run `./install.sh -l -r`

Download the tar.gz file and try again, https://github.com/vinceliuice/ChromeOS-theme/releases/tag/2022-10-29

zip file will cause the assets folder can not read

Run ./install.sh -l

Update your firefox version to >= 133.0, or use old whitesur version

run `git clone https://github.com/vinceliuice/WhiteSur-firefox-theme.git` and try again, make sure your firefox verison >= 133.0

Run `./install.sh --tweaks nord rimless normal -l`

Run: `./install.sh -c dark --tweaks nord rimless normal -l`

Is your firefox snap or flatpak version?