I was doing similar experiments but having a circle of models debate some particular topic to see if they'd arrive at a consensus or not, and I found that they would almost always arrive at an agreement, but Gemini was always the one that held a position outside of the group consensus.

That said, for something very simple like "What color should my room be" I'm not sure this is a desirable trait. The model that knows most people like cream (or whatever) is probably functioning more correctly than the one suggesting dayglo orange