Dark theme makes unit containers flash from white to black.

[vunguyen-dmt]

Issue:
Turn on dark theme, go from one unit to another, the unit container flash from white to black.

Suggestion:
I think the problem is because the class "indigo-dark-theme" is applied to the body tag on the client side using javascript.
I think this can be fixed by setting the indigo-dark-theme class on the server side.