I'm trying to change the Viewport background color.
But I can't seem to find the right settings.
Anyone knows where to find it?
Edit :). This answer by @Moonboots is actually way more useful:
→ How do you change the background color of the 3D viewport?
It's a bit buried in submenus, but don't worry.
Preferences > Themes > 3D View
Scroll down to: Theme Space > Gradient Colors > Gradient High/Off
The background for the 3D vieport can be set in the user preferences > Themes > 3D view > Theme Space > Gradient Colors > Gradient High/Off
There are two ways to do it, Themes keeps the colors consistent with any new projects you create, for example setting a blue theme would make every background in every new blender file blue.
And then there is Viewport Shading, (alot quicker) where you can change the background for the individual .blend file when in Studio/MatCap/Flat shading mode.
Keep in mind this color will not show when you render the image, it only appears in your view port, to change the background in an animation/ render you would have to do something else.
Cmd/Ctrl ,
> Themes > Preferences > 3D Viewport > Theme Space > Gradient Colors > Gradient High/Off