Google updated its design spec recently. The material spec, which Google says is a living document (as evidenced by its ongoing updates), gained further guidance on floating action buttons, dialogs, updates on typography, and a lot more.
One less-advertised update was a change to the section in "Structure" concerning the navigation bar in Android. The "color variants" text is still identical to that from the "status bar" subsection, but an image showing nav bars themed to match your device's hardware was removed. Here's the image in question:
Theming according to device color is - as far as this writer knows - not possible on Android at the moment, and neither is theming the nav bar to its "light style" variant also shown in the guidelines, where the nav bar is white and the buttons become gray.Read More