How to convert SolidWorks parts and assemblies into .OBJ files

The marketing department has requested that I convert a few assemblies into .OBJ files so they can make some animations.  To do this, I first saved the .SLDASM as a .STL file, then used MeshLab import the .STL and save it as .OBJ. Problem is, the color is lost in the transition from .SLDASM to .STL.  Is there a way to export color, or is black-and-white simply the nature of .STL?

Thanks for any help.

SolidworksGeneral