Created attachment 166948 [details]
Screenshots of many places with dark theming issues outside of KDE.

SUMMARY

Many places have readability issues with dark theme on a non-KDE environment (here, Gnome). This includes invisible or almost icons, checkboxes, radio buttons for what I could spot.

STEPS TO REPRODUCE
1. Launch NeoChat in Gnome, and inspect the different places in the application.

OBSERVED RESULT

Many invisible or almost icons, radio buttons, checkboxes, …

EXPECTED RESULT

Those should be easily visible and present to issues to be seen.
.
SOFTWARE/OS VERSIONS
Linux/KDE Plasma:  ArchLinux, NeoChat 24.02
Qt Version: 6.6.2

ADDITIONAL INFORMATION

With another computer I wanted to check that on Hyprland I'm playing a little bit with, but couldn't yet figure out how to request a dark version of the application.

Screenshots attached as an archive to avoid having to add 11 screenshots one by one, as you can't do multiple attachments at once in Bugzilla.

See also the "About NeoChat" part at the left of settings, which is easy to miss.