I'm trying to figure how to draw a simple polygon wirh a solid color with white contours, inside and outside (pretty much like a donut :p), in a transparent background, but I had no success so far.
My little knowledge made me think that with the Stroke effect I could accomplish my goal, but all I could do with it was the outside border.
I tried then to duplicate the colored shape and then resize the copy, exchanging the fill and border colors, but as expected the interior kept the solid color of the layer below, instead of the transparent color I needed.
This may sound silly for most of you but I'm terrible with design and I would like at least some directions.
As requested, a visual cue:
The shape itself is the black circle with the white borders inside and outside it. The red color is just to demonstrate the transparent areas.