Thank you for the program! I made icons for myself. Maybe someone else is useful.

https://www.dropbox.com/s/ox3malobyy5ez4o/pureref.zip?dl=0

thats a nice version, a bit more modern

I made a icns file for the white for OSX. I did take out the shadow, looks more minimal that way

https://www.dropbox.com/s/ikyebk3yoyww0ma/icon.icns?raw=1