Full code changes: https://github.com/Aris-t2/CustomCSSforFx/commits/

Changelog:

[userChrome.css]

• typo in path to @import "./css/toolbars/top_toolbar_system_accent_colors.css";

[General UI]

• (fix) Fx139+: compact menupopups
• (fix) Fx139+: colorized bookmark icons
• (fix) Fx139+: page context menu > back, forward, reload and bookmarks button labels
• (fix) Fx139+: page context menu > back, forward, reload and bookmarks button labels + icon

[Location Bar]

• (tweak) popup > two lines