Summary:
This change addresses some obvious issues which made the ui-debugger unusable with dark mode on.
There may more things that need changing, but at the very least this should be a good place to start.
Reviewed By: fabiomassimo
Differential Revision: D43083218
fbshipit-source-id: 8e4338b79178d3a0f05f9bcaffa2fc6f35eb0e21
39a4cc22b1