If you assign different colors to the Phase Status modifiers you should get the same colors for Existing and Demo elements. I find that New elements remain associated with the color assigned to their category and temporary elements seem to favor the color override for the Phase Graphics. You'll have to experiment with it to see how your model and views export for you.
Also it can be much easier to resolve layer colors with a layer script in AutoCAD after the export. For example, all layers with "wall" in the name can be changed to use the same color using a script, a simple text file that collects all the same information you'd type at the command line to process the change of a layer.
Steve Stafford
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