After I uninstalled a third party product from VS 2013, any WPF app now looks like the old win forms. Before it was working fine and had the modern look of WPF. I went in Control Panel clicked the VS 2013 and clicked on Repair option. After awhile it completed successfully but made no difference. I want the modern look back.
UPDATE:
Ops! What I said above was not really the problem. What happened is that I ended up working on a remote 2008 R2 server (via RDP) and I found the answer here