Change color of polygon outline by map scale

Discussion created by jtslbarnes on Jul 26, 2013
Latest reply on Jul 26, 2013 by jtslbarnes
ArcMap Desktop 10.0, Visusal Studio 8.0, vb.net.

I have a taxlot polygon layer.  I want to change the color of the polygon outlines after the map refreshes below 1:10,000 mapscale.

Am I looking at an addin extension?  I want this to happen automatically with not user input.  I have written multiple vb.net addins, all buttons or tools, but no extensions.

Can someone point me in the right direction.