A server error page should not be rendered with white text #7478
Description
Seen with #7475
When I try to connect to a server with http port 80), but the server only supports https (port 443), There may be an error page that has a style sheet like e.g. this:
When the desktop client hits this, It is rendered in an error popup like this:
We should prevent text in white, or light gray on gray background.