If a player (say, Green) plays a build order, therefore granting him the ability to build more than one thing, is he allowed to spend all the resources required for a colony and a factory at once and drop a factory on a planet where he previously had only his spaceship? Or would he be required to play two consecutive build orders (or mooch off someone else's build order) to upgrade the colony to a factory?
I felt the colony should already exist prior to the build order being revealed in order to be valid for a factory upgrade, but everyone else seemed to think it was allowed to go straight up with a flood of resources. What's the consensus around here?