One good feature of Kindle is E Ink Pearl display as you can easy read in bright sunlight and let your eyes rest with no strain. In the same time as the E Ink Pearl is like normal paper you cannot read in the dark so you will need a source of light. As you will need a cover to protect your ebook reader why not buy a lighted cover? And better buy a solar lighted cover like this one from SolarFocus.
Solar cover for Kindle 4 by SolarFocus features a built-in solar panel that charges the reserve battery for the LED reading light while also providing extra power to the Kindle. Moreover the reading light draws power from the reserve battery, not the Kindle, so you won’t have to worry about draining your Kindle’s battery.
You can even charge your Kindle using the cover’s built-in reserve battery. Press the power button once and the LED indicator first shows the reserve battery’s remaining power level for about five seconds. After that it’ll blink red while the Kindle is being charged. To turn off charging, press the power button again and the LED indicator shows the reserve battery’s remaining power level before turning off.
A fully charged reserve battery requires only eight hours of direct sunlight and provides up to 80% of backup power to the Kindle.
You can buy it from Amazon US for $79.99