Dark Theme - REVIT 2024 & NEWER

Описание: To Toggle between Light and Dark-Themed Canvas in REVIT 2024 or later,
Go to View, Windows & Click on "Canvas Theme", or use
SHORTCUT CA.
Lastly, if you want to go back to the Old School,
Go to File, Options, Color and choose "LIGHT" under the
"UI ACTIVE THEME" Dropdown.
Then hit OK.
For versions 2023 and older watch the suggested video
at the bottom of your screen.