Change Drone Icon in Simulation

I have built Mission Planner using the source code from GitHub. All of my changes are working properly after compiling but I cannot find the location of the icon used by the simulation or when the drone is connected with Mission Planner. Instead of the default green quadcopter I want to use the image of my drone in Mission Planner during the Simulation and Mission. Can anyone help me with it?

GMapMarkerQuad.cs is your friend