Hi Paul, there aren't currently any kinds of per-object color properties. Those are definitely something that will come with v2.

But I think I should be able to expose a property on construction lines that would make it possible to keep them with a keyboard script macro, I'll see what I can come up with later today.

I've thought about making some method to optionally keep them before as well, but I haven't been able to figure out a good place to put the UI for it yet...

- Michael