Yes, simply select Show QuickDrop from the Window menu (or select Quickdrop from the View menu to pop open the Quickdrop portion of the user interface).
Next, select any icon from any collection and you should see that icon pop into the QuickDrop window.
Next, drag and drop a folder or file from the desktop onto the QuickDrop window to set the dropped item’s icon to the one selected.
If you don’t see the change immediately, try clicking on the folder or file in the Finder to get the Finder to refresh. You can also drag and drop multiple items onto the QuickDrop window as well.
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