Hi sneather, well there's not really any way for a script to recognize each separate "part" of your one big object - that would require some kind of feature recognition or pattern recognition type functionality and that's not easy to produce. All a script can do would be to see each individual face, not each "part", unless you had the unlikely case that every "part" was only made up of one single surface...

It usually takes some human judgment to categorize which faces of your big object constitute a single "part", so it's not easy to automate that, you will probably need to make selections and assign styles yourself.

It's similar to how you can't just push one button in Cinema4D and have different material groups automatically created in there as well, Cinema4D doesn't know how to divide up the big object in an automated way.

- Michael