Introduce ExodusMapRolloverCircleColor for controlling the color of the new minimap selection circle, turn the alpha to zero to make it disappear completely (it's already quite light now)

indra/newview/llnetmap.cpp

@@ -750,6 +750,8 @@ void LLNetMap::draw()
 		}
 
 		// <exodus> Draw mouse radius
+		static const LLCachedControl<LLColor4> map_avatar_rollover_color("ExodusMapRolloverCircleColor");
+		gGL.color4fv((map_avatar_rollover_color()).mV);
 		// Todo: Detect if over the window and don't render a circle?
 		gl_circle_2d(local_mouse_x, local_mouse_y, min_pick_dist, 32, true);
 		// </exodus>