I've been trying to find a way to do this.  The idea is to colonize an unclaimed planet from another orbital body (Think Colonizing cannon).  Everything I try either minidumps or does nothing though.  A massive or infinite range colonize ability crashes.  A cannon shell calling a colonize buff at impact crashes.  Spawning a colony ship at the target planet using CreateFrigate after the cannon shell arrives crashes.  Using SpawnShipsAtPlanet in the previous example appears to do nothing.

I'm starting to wonder if this is even possible to do.  Anyone have any success with this elsewhere?

-dolynick