To close this thread -

Can I re-color/enumerate/scan/detect the dots on the minimap?
- No, the minimap tracking layer is rendered in the game engine, the UI doesn't have any visibility of the contents of the layer other than the dot the cursor mouses over. It IS possible to add your own simulated tracking dots by moving a frame containing a dot graphic of your own creation over the mininimap, but you are responsible for calculating where to put it

Source: http://www.wowwiki.com/Interface_Cus...on_FAQ#Minimap