Hi rado, sorry right now style information is not sent to SKP export, just the plain geometry goes over. That is something that I want to improve in the future though.

There isn't any mechanism set up for scripts to take part in the export process, so there isn't really any way for a script to help out with that in particular.

I'm not sure of how you can get that information to transfer into SketchUp right now, you might try bringing your 3DM file into Rhino and see if its SKP format export will do it or not.

- Michael