Retopo Sculpt Selecting Unwanted Vertices I'm having issues with blender selecting vertices that I can't see and projecting them through the other side.  Is there a setting where I can make it not allow selecting through my sculpt during the retopo process?

Here is an example of what this is doing. Of course, I can't work in wireframe because its too hard to see my vertices.
open user preferences (file menu or Ctrl+Alt+U) go in theme tab, select 3D View and change the colors