Yes, thank you. I've been an Apple user since the Apple II, and I'm very much aware of their success. That doesn't mean they choose colours based on market research. You're making an assumption. The truth is, none of us really know—unless there's some public statement from Apple or an employee of which I'm unaware.
Steve Jobs once famously said:
In context, he's talking about technology, not fashion here. And he has a point—when you're at the cutting edge of technical innovation, you can't rely on the everyday consumer to visualise what they'll want a year or five from now. Still, Apple (likeallmany very successful companies) can sometimes be arrogant too, and assume they know what's best for their customers instead of actually listening to them.
For sure regarding Jobs and arrogance... remembering the Apple Lisa, Apple G4 Cube, and Apple Sox.
Apple does do market research. That's OK if you want to assume they don't.