Re: Wait, what?
I have a Kindle Oasis. The one with the extra battery in the leather cover.
The backlight is very white/bluey.
They've just brought out a new revision, which doesn't have the extra battery/cover, but adds a colour temperature control ('adjustable warm light'), so you can go sepia to bluey white. It starts at about £230. Same as my last one I think.
Mine is definitely quite bluey white.
I got a Tablift holder to go with the Mediapad tablet. I'm very pleased with it. I'm trying to learn lots of stuff from big PDFs and it works much better than the Kindle.