How can I change the default background color at runtime?

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:bust_in_silhouette: Asked By Michael Wildish
:warning: Old Version Published before Godot 3 was released.

I want to change the default clear color at runtime as I switch from one scene to another. VisualServer has a function but it does not seem to work?

:bust_in_silhouette: Reply From: eons

In 2.1.1 (at least on Windows), VisualServer.set_default_clear_color works fine.