Hi, I am using latte-dock with a system tray that has many icons that are all white except one.
The Icon for the Seafile Client is yellow and I would like to change it to a white icon.
KeePassXC for example was initially green but it is possible to use the monochrome icon in the settings of the app.
I think it should be possible for users to configure different Icons for the third party Systemtray applications in an easy way.

A Screenshot of my system tray:
https://imgur.com/a/OeXzBDW

Hi!

Thats not that easy as long as your third party app does ship the appropriate file. The default icons are in /usr/share/icons, a Plasma theme needs to implement each icon itself or uses the global one as fallback.
Do you already have a black and white icon for seafile?

The KDE-way of handling icons is described here: https://develop.kde.org/docs/use/icons/, freedesktop.org has a more technical description on how icons are handled in themes and I think KDE-software does respect it (see Icon-Theme-Spec).