Hi Adler,
I reproduced the issue, i get the same.
Main theme should be Albatross, right? I get the same white text in the network tools widnow.
I think these are settings inside the theme, you can't explicitly change them. Anyways if you want you can try to tweak config files for the themes in /usr/share/themes/Albatross, if you can find where text colors are defined.
Have a look on google too... maybe you can find nice suggestions for theme tweaking...
Bye!