Tray icon adjustments

[Almaz]

Please make it possible to select a monochrome icon in the tray (like in the application menu).
It is also important that you can change the width of the area occupied by the icon - it can change according to the size of the current icon.

1 The area with the original icon is 32 px wide.
2 The area with the custom icon is 32 px wide - too wide.
3 The standard width for icons in the group (LinuxMint Cinnamon) is 24 px - looks harmonious.
4 The desired width of the custom icon is 24 px.

Thank you!