One of the rumored additions in Android Q Beta 5 was a dark boot display on Pixel gadgets, which might deal with a frequent grievance that rebooting your cellphone at evening flashes you with a vibrant mild. The characteristic has made an look within the newest beta, but not for all gadgets.
Starting with Android Q Beta 5, the Pixel boot display has now switched to a dark background, but the remainder of the animation is equivalent. The boot sceen does not appear to be affected by dark mode being on of off — it is merely all the time dark (after the primary reboot with Q, anyway).
The one annoying caveat is that, a minimum of for now, the new background is not obtainable on all Pixels. We could not get it engaged on something aside from a Pixel 3/3XL, and our associates at 9to5Google are reporting the identical. There does not seem like a technical purpose why the sooner Pixels cannot have a dark boot animation, but maybe they’ll in a later Q launch.
https://www.androidpolice.com/2019/07/10/android-q-beta-5-has-a-new-dark-boot-screen-but-not-for-all-pixels/