yes, thx for trying. I tried (and did it that way now) with - per hand - transforming, but - under Linux (have no win/osx for testing) - i have very bad scaling ability.
It is somhow limited to some pixels to make the circle bigger with one “click and drag” action. (with the scale-action over every axis) I had to do about 30 scaling actions to increase the size of the collision shape to fit the colored circle. (screenshot)
Maybe i should make a bugreport for this.
cheers
Ganymoe