Remember back in ancient computer times, say the late ’80s and early ’90s, when your only choice for a computer screen was black, with white, orange or green typeface?That model has long since been discarded in favor of full-color screens, which are much easier on the eye and, frankly, more attractive. But then the Kindle e-book reader came along, along with a few other similar devices (such as the Sony Reader), and everyone just accepted that they were monochrome. Even the magazine-sized Kindle released earlier