You might be able to make the planet have a passive ability to give you those extra resources. You'll want to look at the Vasari drain planet ability as that is the only ability I can think of that generates resources.

Someone’s been playing Conquest too much.  While this might be a good idea, I just don’t see it being a feasible one with the mods that are out that increase the research for resources now. with those mods there is way more money than you need now.

You can do this by making the colonize ability have an extra buff which will have a change to be aplied. Note that resources can only be generated as an overtime action and thus need a timeElapsed finish conidtion so you will need 2 buffs where one keep casting the 2nd when it finshes and the 2nd which will generate the resources.

Also if I remember right it is only possible to make it generate resources, so you can't make it make a different amount of metal and crystals.

 Conquest was only one of the best RTS Space games that was ever made.  Created by Chris Roberts back in the day when he went solo and created Digital Anvil.  I still play and love that game even now. The whole Admiral concept was genius.  Admiral flagship dies he automatically transfers his flag to a new Capitalship.  And the AI was ruthless in that game.  I wish they had made a newer version of this game.  Sins took some of their concepts and made things better and some things not so much better.  Conquest planetary systems was a better idea.  I’m hoping sins will adopt this style with Sins II.