It seems there are several eBook reading apps that turn the text brown when in sepia mode. I suspect a lot of these apps are written by programmers who seldom read for pleasure. I'm still hoping that Amazon tweaked the eBook app for KFire as I no longer want to use another Android or iOS app since they cannot take advantage of Whispersync. To me the most important function is Whispersync and the ability to sync farthest page read, highlighting, notes, etc. Secondary to that is formatting. However, if formatting is so lackluster as to make reading a pain, then that will cause me to rethink any Kindle device. I can overcome the lackluster formatting on the Kindle E Ink readers. Unfortunately I cannot overcome it on the iPad due to the iPad's horrible text rendering engine and low resolution, which admittedly is an Apple issue rather than an Amazon issue. I hope I can overcome it on the KFire, or better still, I hope the formatting is good enough that it does not have to be overcome.