Miles Walker from HOK posted this tip for fading out elevations
While this does work I believe I have a much better solution.
I originally posted it on AUGI and you can download the family here
What I did was create a mass family that has a transparent material with different levels of shading, so if you have a building with multiple steps you can make your elevations easy to understand.
Simply place the family between the elevation and the building, make sure mass is turned on in your elevation and turned off in your floor plans. You will need to use the linework tool to turn the edges of the family to invisible lines, hover on one of the edges and hit tab to select all the edges at once. The only caveat is you have to use Raster instead of Vector when printing.