Custom race start system

From what I can see you can easily rename your start system for custom races. Not sure if the game will grump if you use one that has already been put in the starname list.

You can't exactly rename the start system. What happens is that the game gives the home star and all the planets the name of the homeworld. 

I recently made a custom version of the Terrans and the game renamed the entire Sol system "Earth"; Mars became Earth IV, the sun was called Earth, etc.

I do not want to rename it per say. I want to assign my star to be the races starting point.