display surface normal / surface direction / two colors per surface?

I'm using SolidWorks to create a surface model of a welded structure from the manufacturing assembly model.  Some of my surfaces are centered, and some are offset.  I will move this model into ANSYS for analysis, and I need to know the direction to offset (Trial and error will work, but it's a real pain).

Is there a way to make SolidWorks 2010 SP4 display different colors for the positive vs negative side of each surface body?  I do not have Simulation.

Thanks

SolidworksSurfacing