A sharp display—for color e-ink. Its 10.3-inch display offers the same clarity as your average Kindle, with a resolution of 2480 x 1860 and 300 dpi in black and white, and 1240 x 930 and 150 dpi ...

How color-coding your notes helps you study. Using color can improve the performance of your memory. This isn’t just a throwaway observation: Research has backed it up.

Color e-readers have been around for over a decade, and some brands, such as Pocketbook and iFlytek, have experimented with the technology. However, neither of their products has sold very well. E ...