Actually, maintaining multiple SKUs and variants tends to reduce profit and complicates supply chain and warehouse mgmt, so - not really a 'no brainer.' IF it nets more overall profit, sure - but that's not a foregone conclusion. Working in tech, I've seen very few rose gold Apple devices, even in the marketing dept. I'd be up for space grey, otherwise - use skins and be done with it.
Yeah this is true, but one cannot forego any positives in this. On purely looking at supply chain logistics and cost, then yes manufacturing different color variants would increase cost. However there are benefits such as luring customers that might otherwise not buy an iPhone or Macbook that cannot be accounted for because they are not quantitative. In my computer science courses in college, I have not seen a rose gold or even gold Macbook. I've seen Macbook Pros, and quite a few Surface Pro 4's. In my French course(I hate French class), chemistry courses, biology, and liberal arts courses, I've seen a plethora of Macbooks with different colors LOL. What I was saying was based on the Macbook line alone, I have not seen anyone with a silver Macbook. I've seen silver iphone 6 and 6s's, but I've not seen one college student use a silver Macbook LOL.
Lol - I might change it to "because these are the ones pretending to be creative, while basically being posers, and 'different, yet just like everyone else..'", but indeed, Apple's marketing does include that crowd (not exclusively or Apple would go broke), along with others.