Hi,
hello eveybody, I'm new in this forum and in processing... sorry if my questions will be silly.
I have a problem exporting my jobs as pdf.
Here is a very simple example.

With the code below I expect a light grey circle WITHOUT STROKE to appear on the screen. And this is exactly what happens, but when i open the generated .pdf file the circle HAS a black outline stroke.
Why?
Thank you very much for your help!

import processing.pdf.*;

 size(400, 400);
 background(255);
 noStroke();
 
 beginRecord(PDF, "prova.pdf");
 
 fill(0);
 ellipse(250, 250, 300, 300);

 endRecord();