Night mode disappeared on Nexus 6P with 7.1 Nougat? Here's how to bring it back

Night mode is pretty useful for reading when there is little to no ambient light around, as it filters away the annoying blue light which, at least in theory, is the one messing with your sleep patterns. Such modes usually bring a warm reddish or yellowish overcast to your screen ("amber" in the case of Night Light), so the brain doesn't get tricked into thinking it's daylight, and choose to stay restless precisely when you have to go into deep slumber.

There is a rather easy way to bring this night mode back on your Nexus 6P with the Nougat dev preview, though, involving a simple mod created for the purpose. Here's what you need to do:

1. Download and flash the StockModed zip on your Nexus 6P with your custom recovery of choice;

2. Go to Settings > Display, and turn Night Light mode on

source: SyCreed (XDA-Devs)