Originally Posted by HarryT
It's no use asking us - we don't know the answer. You need to ask Kindle Customer Service.
I am amazed no one asked them by now. Something that can improve the Kindle even more, why has there not been many asking Amazon the same thing?
Today I did suggest it needs to be in a firmware update. Seems others have this option, so why not kindle also? I pointed this out to them, as some Fonts are lighter then others, and could do with a contast for the Eink fonts, like the Kobo Glow light has, I believe you can also adjust the contrast of the E ink display and brightness of the light of course.
If more push for this the more likely it will make it in a firmware update, and a good improvement for the Kindle.