company-mode popups and magit current region are dark while current theme is light

Question

I've been successfully using lsp-mode and magit for a while with a light theme (leuven).

Today I was messing with something seemingly unrelated (company-mode and auto-complete settings in my ~/.emacs file) and all of a sudden popups in lsp-mode + company-mode appear as if in a dark theme:

The same goes now in magit for the area where the cursor is:

Needless to say, it's all unreadable now!

How can I get the light colours back?

My ~/.emacs contents are here, if it helps: https://pastebin.com/Hph4VXvH

Thanks!

Answer 1

The problem was this from my ~/.emacs file:

'(frame-background-mode 'dark)
'(hl-sexp-background-color "#1c1f26")

I'm not really sure how it got there, but setting frame-background-mode to nil (so that it will be set according to theme) and commenting the second line did the trick:

 '(frame-background-mode 'nil)
 ;; '(hl-sexp-background-color "#1c1f26")