Are you trying to do something like this: [ame] http://www.youtube.com/watch?v=THQhZTli09Y[/ame] This is the script that I use to switch object visibility by layer or by object:macroScript DisplyByLayerObjectTooglecategory:"miauu"tooltip:"byLayer<>byObj"buttontext:"L<>O"( for o in selection do ( case o.displayByLayer of (…
He is talking specifically about not having to alter the opacity. There are definitely cases where a transparent base can make the retopology process confusing. With a little outside thinking, you may be able to write a script to do it in Max. I found a way of doing it in Maya with later versions of my custom Retopo tool.