Comment #6 on issue 1097 by nicolaih...@gmail.com: Not all shapes support borderColor/borderWidth https://code.google.com/p/moose-technology/issues/detail?id=1097
yes, RTPolygon can not be used without explicitly setting the border color. (can I get right access to the roassal repository)
For drawing ellipse with a uniform border width we need a change in athens drawing api. (we should discuss this on pharo-dev)