i would know how can i brush or paint shapes on map, but where areas between shapes are "in collision", those areas take other color. I think if i could paint the shapes with a color 50% transparent, result will be that i want. then... ¿Can i do it?
if don't understand, see this Example:
I have a shape that cover Spain and Portugal, the shape's color is Blue.
Other shape cover Spain and France, this shape's color is Yellow...
Spain's shape's color must be "Green". Also de user can see the routes back the shapes...