Thanks to the wonderful hardware designer Greg Davill for this suggestion on Twitter:
Several custom themes for KiCad are available from this GitHub repo:
pointhi/kicad-color-schemes
Want to change the color scheme of KiCad? Look here for Inspiration.
Check out the readme to see all the options. Here are a few:
OSH Park 
Looks nice, Eagle also allows changes but that behave-dark is amazing!
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