I have created two Quick Access Toolbar buttons that let me toggle between two desired Matlab Desktop layouts, one which arranges the panes in a certain way when the Editor is docked, and one when the Editor undocked:
However, it is unappealing to me that both use the same visual icon 
. I would like to assign alternative and distinct images to each of these icons. I notice that the custom Quick Access Buttons are configured with .xml files in the prefdir. I have attached the .xml.zip for my "Docked" button as an example. I was wondering if there is something in the file that I could add or modify to change the icon image. I am looking for tags that dictate the current image, but cannot determine which it is.
Does anyone know if/how such a customization could be made?
