Stylish' browser extension found stealing users' internet browsing history

Is it safe to install themes from userstyles.org : r/firefox

Nocturnal Firefox Theme (Read Description)

Firefox Stylish · Issue #2390 · gorhill/uBlock · GitHub

Stylish and Userstyles.org have a new owner - gHacks Tech News

Melbourne (Firefox CSS, FF 29 and above) by noha-ra on DeviantArt

Hello friends, it me again ;) Someone know how to change the font size of this editor ? :D (it's the style editor in firefox with stylish) thanks a lot ! : r/firefox

HOW TO MAKE MOZILLA FIREFOX STYLISH

Firefox 89.0 Released with New Elegant UI Design – UbuntuHandbook

extensions.stylish.editorWindowMode=0 [show editor in a tab (default)] not followed if no userstyles installed, editor opens in separate window instead · Issue #248 · stylish-userstyles/stylish · GitHub

Globex updates custom Gmail theme for Firefox