Is it possible to change the icon of a popup macro?

I have made several variations of the “Google Image Search” macro in the macro library. However, when these macros are triggered, the macro title is not visible because it is replaced by the default text unlike in the previous edition of KM.

To give a separate identity to each of one’s macros, can one change the displayed icon on the top left corner? For example, can I replace the default globe with an amazon favicon for an Amazon search macro?