The WSJ reports that Apple has instructed suppliers to increase production of the gold model of the iPhone 5s by one-third after seeing high demand for the color. Availability for the gold model was into October within 30 minutes of orders opening on Apple Store sites around the world, with retail stores also reportedly selling out quickly and carriers getting few in the first place … 

It’s likely that demand for the champagne colored model has been fuelled by it being immediately recognizable as a 5s, the slate grey and white models looking more similar to the older iPhone 5.