Currently only useable by players, GMS will have mixed dark and white theme until I fix it.
Features:

Dark theme
Custom image or color background

Install

• License: GNU General Public License v3.0 or later
• Weekly downloads: 3
• Average daily users: 39
• Rating: 4.8/5 of 5 ratings
• Created: 2021-07-05 19:01:22
• Last updated: 2021-08-11 14:55:51
• Homepage: https://github.com/GreenTeaSeb/Roll20-glass
• Support site and email
• Orig: https://addons.mozilla.org/en-US/firefox/addon/roll20-glass-theme/
• API: {ada2b3d9-cd74-4107-bc86-9b2ee92be897}