X Dim Mode by juanbuis

Restores the Dim (dark blue) background option to X/Twitter display settings.

Miss the Dim dark blue theme on X? It's back.

X removed the Dim background option — X Dim Mode brings it back, and adds a lot more.

6 color themes
Pick from 6 dark themes — all easy on the eyes.

Custom color picker
None of the presets right for you? Choose any hue you want.

Works everywhere
• X.com and X Pro
• DMs, search, settings, and more
• Follows your system theme automatically

Simple to use
Toggle from the popup icon or from Settings → Display on X. That's it.

Lightweight, no data collection, no ads. Just the theme X should've kept.