I never said that you couldn't sell other colors just that due to demand and popularity the black phones are easiest to unload.
just going by the poll in this thread the black/space grey is bought 3 to 1 compared to the other colors. that's 3 times the potential customers.
another reason I don't buy the white face phones is that I'm afraid that the white will discolor or yellow over time.
Not necessarily. More black phones = More competition = Lower Selling Price from what I have seen.
Honestly I could care less how much I get for the phone when I resell it, I buy whatever color because its the one I wanted. I had a black iPhone 4, Silver iPhone 5, Gold iPhone 5s and now a Silver iPhone 6 Plus. I wish I had gotten Space Gray, in fact its the one I originally wanted. Problem was, I wanted one of the, if not the most popular configs (Verizon/64GB/SG) so when I went to preorder it was out of stock unless I wanted to wait until mid/late October.
I liked the 5ses more Champagne colored aluminum then this years gold. I have seen all three colors and I still think Space Gray looks the best, then silver and gold. Which is funny because that is the exact opposite of how I felt last year (Gold, Silver, Space Gray).