In excel 2003, I was able to edit the appearance of the buttons on the toolbar that you pressed to run macros.

I can't find any facility to do this in office 365.
The reason I want to do this is to more easily identify what each button does.
Is this possible?

You should be able to modify the button image to use one of the supplied images, but you can't draw or import your own.

Thanks for the advice.
Will save hours searching for something that does not exist.