Icon by default of any macros, whether to add it to the Quick Access Toolbar or to tape, as follows: 
. Is there a way to change it before assigning it to a button? Perhaps by editing customUI.xml inside the add-in .xlam file (after renaming it to a .zip file)? customUI.xml allows you to choose among 2400 hidden icons that are not displayed in Excel settings, which makes this file interesting (more details here and here ).
Please note that I do not want to change the default macro icon, only the default macro icon my to distinguish it from others.
Thank.
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