In Big Sur icons in the menubar are white (not black as they used to be in previous OS X versions). Neither SeaDrive nor SeaFile reflect this (see the attached screenshot).
Please update the logos for Big Sur to reflect this.
After playing a little bit with the menubar, I understand better what is happening. Hence, my request above is not completely accurate:
According to your git repository (https://github.com/haiwen/seafile-client) both black and white icons exist. The strange result on my screen is the consequence of Big Sur adapting the icon color to the background image (e.g. https://arstechnica.com/gadgets/2020/11/macos-11-0-big-sur-the-ars-technica-review/5/). That is, while the color is wrong on the screen shot above, it is correct if I use another wallpaper (both white or black). Please ensure that the correct icons are used depending on the wallpaper.
The size of the icons differs from previous OS X versions or Bug Sur icons have a transparent border of 1 to 2 pixels on either side (I could not find the corresponding documentation). In consequence the icons in the current version of SeaFile and SeaDrive look “wrong” compared to other icons, even if the color is correct. Could you please fix that?
In the new version for the new icon, the sync status color and the application icon are the same color, resulting in difficulty to distinguish the status.