Greasy Fork is available in English.
Several Roam experiments, including custom highlight colors, color blocks and blockquotes. Enable or disable features at the top of the script
< Feedback on Ryan Guill's Roam Experiments - roamresearch.com
Doesn't work with Tampermonkey.
the domain setting is not correct.
change it to the following domain
// @match *://*.roamresearch.com/*
@mzantsi Which extension are you using? It works well for me in violentmonkey but maybe a different extension has more strict rules?