Created attachment 127052 [details]
Telegram's system tray icon with Plasma Style "Breeze Dark" and Color Scheme "Breeze Light"

The recent update https://bugs.kde.org/show_bug.cgi?id=417583 introduced monochrome system tray icons for Telegram. Whether the dark or bright one is chosen seems to depend on the current color scheme. However I use a bright color scheme together with a dark Plasma style. This seems to result in the wrong system tray icon being chosen which in this case is the dark one that is barely visible on the dark panel (see attachment). When I temporarily set a dark color scheme and restart Telegram the bright monochrome icon is chosen which I is more easily visible.

This is my first time interacting with this bug tracker and I apologize if I missed some guide line, related issue or if this is entirely the wrong place. I am happy to address any questions or feedback.

STEPS TO REPRODUCE
1. In System Settings > Plasma Style: set Plasma style to a dark theme, e.g. "Breeze Dark"
2. In System Settings > Colors: set color scheme to a bright one, e.g. "Breeze Light"
3. Close and restart Telegram

OBSERVED RESULT
The dark monochrome icon is displayed for Telegram's system tray which is barely visible on the dark background.

EXPECTED RESULT
The bright monochrome icon should be chosen to achieve a higher contrast to the background.

SOFTWARE/OS VERSIONS
Operating System: Manjaro Linux 
KDE Plasma Version: 5.18.3
KDE Frameworks Version: 5.68.0
Qt Version: 5.14.1
Kernel Version: 5.5.11-1-MANJARO
OS Type: 64-bit

ADDITIONAL INFORMATION
Telegram Desktop Version: 1.9.21