Linux: Detect system dark theme

[SamantazFox]

Expected behavior

Adapt the app's text and background colors according to system color scheme

Actual behavior

• All the text fields react as expected with a dark theme (white text with dark baground)
• The text in the "service or website" list appears light grey on lighter grey background
• The currently selected login disappears because text/selection colors are the same

Step by step guide to reproduce the problem

Use a dark desktop theme (e.g Breeze dark on Plasma) run Moolticute.AppImage Go to "Credentials" tab Unlock your device

Moolticute Version

Latest stable: v0.42.1

Operating System

Debian Based distribution (Ubuntu)

Mooltipass Device

I use The Mooltipass Mini, but I think this doesn't matter

[limpkin]

linked to https://github.com/mooltipass/moolticute/issues/1158