Originally Posted by
CADastrophe
First off, welcome to AUGI!
(question 2)
I don't think that there's a quick way to accomplish this. With multiple links, I believe that you will have to edit the V/G Overrides (of the View or the View Template) for each model listed under the Revit Links tab. You can change the "Display Settings" to "Custom", and in that dialog, change the Model Category overrides to "Custom" and set all of the colors to whatever is desired. Aside from the arduousness of setting this up, another issue is that this will be overridden by any Phase Graphics or View Filters that will affect any of the nested elements.
Alternatively, depending on the simplicity of the Worksets (yours and in the other models), you make be able to set up some View Filter that include/exclude elements based on their Workset. This can either be easy or impossible depending on how things are set up, and what you are permitted to do.