Sorry about the poor "illustration" not showing up well as it did when I had written the reply lol.
The males never have sparring between other males per say other than when you add new ones that will end up establishing where they are in the tank in regards to hierarchy.
When they have enough territory space that all ram pairs (and even some unpaired rams will start to create territory) they leave each other alone and just stay on guard in their area of the tank.
The gold ram doesn't mistake it... are you sure the Gold ram is a male? Didn't see the gold ram - maybe didn't upload?. At one point when I had some young females in my show tank, they had the behavior as a pair... but they both had pink bellies, they eventually went and paired off when they got older, but Rams are very social and could have the aspect of a "friend" or b"buddy" in the tank.
Rams don't go after other fish to show off to the females, with my experience, I have seen rams pair up instantly after adding them to the tank and swirl around each other... It is more color similarities than anything else. Some rams will have (in regards to blue rams in this instance) what I call the "uni-brow" marking between their eyes/forehead, and they are the much more dominant pairs that have ended up in my tanks. The rams that have the "uni-brow" will pair up together as compared to a ram with a uni-brow pairing with a ram that doesn't. So based on that, I would guess it is all based on the color and health of the rams. As with any animal their goal is to pass on their genetics, and to do so they have to be healthy... have you seen an unhealthy fish that is very colorful? So as color comes into play it also plays out the longevity of their genetics.
Better German Blues
This is my website that I just added some photos to better sex rams in general and not just germans.