I think you're right, but fortunately I've seen a couple Ys with Gemini wheels, sans aero covers. I'm waiting for a red stealth performance, FSD. I might get the wheels dipped to same color as the black trim, for handles, etc.
Where did you see Ys with Gemini wheels? On a truck or the Fremont parking lot?
About the wheel dip, yeah! I was thinking the exact same thing. Thinking a flat or semi-gloss might look really nice. Tell me if you do that, I'd love to see pics!