Ubuntu
ubuntu-themes package

  1. Bug #1743710
  2. Comment #18

Comment 18 for bug 1743710

Revision history for this message
Brendan McCarthy (brendan.oddsoftware.net) wrote : Re: Ubuntu 16.04: since 2018 all dropdown menus black and unreadable

Changing this works for me:

In /usr/share/themes/Ambiance/gtk-2.0/gtkrc line 346

Change:
style "menu" = "dark" {

To:
style "menu" = "white" {

And run gtk-theme-switch2 to apply the style change.