Debug draw filled polygons

Hey guys,
do you suppose the debug API could at some point feature functionality for drawing filled polygons? It'd be immensely helpful in debugging map regions ingame, for example.

At this point I suppose the Color structure would need to include an alpha value as well, since it'd be essential to be able to see through the polygon.

Start by locating the debug drawing API and the Color structure in the protocol definitions. Determine how filled polygons and transparency should be represented, then confirm that the API can draw map regions with alpha blending and document or test the resulting protocol behavior.

Written by the indexing model from the issue text.