With Stylish, and on Userstyles.org, if I were to try to find styles for this site itself (userstyles.org), it ends up showing results from all sites. Seems like some kind of meta-distinction problem. Can this please be resolved so I can easily find styles for this site? Right now it is impossible, since just searching 'userstyles.org' brings up all results from every site.
To be specific on what goes wrong: Clicking on the 'Find more styles for this site' button in the Stylish extension menu redirects you to https://userstyles.org/styles/browse?category=google
Going to /categories/site (style Types -> Site Styles) and picking Userstyles.org redirects you to this page: https://userstyles.org/styles/browse/userstyles.org
, which itself returns an internal server error 500 page.
Please look into this.