User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:79.0) Gecko/20100101 Firefox/79.0

Steps to reproduce:

1. System
   MacOs Mojave 10.14.6
   Thunderbird 78.1.1 (64-bit) on
   Dark Theme on Mojave
   Default Theme on Thunderbird (same on Dark Theme)

How to reproduce
0. Have Dark Theme enabled

1. Start OpenPGP Key Manager (Tools - OpenPGP Key Manager)
2. Doubleclick on a OpenPGP Key

Actual results:

The info in the tab "Your Acceptance" is unreadable (see screenshot). The other tabs ("Certifications" and "Structure" are readable and have a proper dark theme.)

Expected results:

tab "Your Acceptance" readable in dark theme

This seems like an important issue to fix. Unfortunately :aleca is currently offline. I'd appreciate help with this bug from someone who has experience with Thunderbird theming/styling.
Magnus, do you know who could help?

Richard, want to take this?

This works in Daily, the panel is fully dark. I think bug 1638233 is needed, which sets the dark system theme pref, to fix this issue.

The OpenPGP Key Manager doesn't use the dark theme. I haven't converted it to be themeable because I don't know if it stays how it is. If it stays, I can make it themeable.

Thanks. I think we'll continue improving the manager, but for 78 it will not change significantly any more.