How to set border color when fill color is transparent in polygon component

OS ( Win10):
PsychoPy version (2023.2.3):
transparency, from 0.0 = invisible
border color

I would like to create a square with a black border and transparent inside. When I set the transparency to 0, the border color was also missing.


Opacity should be 1 and the Fill colour should be None.

If you want to run it online the fill colour should be null. In my identity fusion demo I use a Both code component to set transparent = None in Python and null in JS and then use .setFillColor(transparent) in Begin Routine.

Thanks a lot. It works