Google has given a bunch of its apps the Material Design treatment. Thus far, YouTube isn't one of them, even if you're running Android 5.0. But a few users have noticed a UI change that nudges things in that direction. They've fired up to app and slid out the sidebar, only to see that it's now white. With their avatar in the top left atop a colorful background, YouTube is starting to look ever-so-slightly more like what Lollipop users would expect.
YouTube Android App Now Sports A White Sidebar For Some Users, Without An Update was written by the awesome team at Android Police.