You need to edit tha materials in the profile manager.
You can set the material for all edges of the entire fill
or you can right click on one edge of the fill and using the pet palette set the material for just that edge.
Barry.
One of the forum moderators.
Versions 6.5 to 27
i7-10700 @ 2.9Ghz, 32GB ram, GeForce RTX 2060 (6GB), Windows 10
Lenovo Thinkpad - i7-1270P 2.20 GHz, 32GB RAM, Nvidia T550, Windows 11