Black and White Apples

Why does Apple charge $150 more for black laptops than for equally-configured white ones?

Apple’s pricing decision was no doubt influenced by its experience after
introducing a black version of its popular iPod in the fall of 2005.
Although it was priced the same as the company’s traditional white iPod and technically identical to it, demand for black units quickly depleted the company’s inventories, even as white ones remained in stock. Because the black version was new, it stood out, causing many more buyers to order it … By the time it introduced its new MacBook models in the spring of 2006…it charged more for the black machines simply because it could.

From Freak Economics Blog