Material Design is evolving yet again. Then we had Material Design in 2014, introduced with Android 5.0 Lollipop and eventually rolled out as the design language of the whole of Google. With Material Design, apps were built out of "digital paper," with slick transitions between app elements. And it gave us common UI building blocks we know in Android today, like the floating action button and pull-out "hamburger" menus for app navigation. Material has evolved over the years, eventually being a lot less colorful and more practical than the original 2014 demo reel. Many early Material apps felt like "cookie-cutter" designs, and it took a couple of years for Google to debut full Material Theme guidelines to help developers tie their own design language and brand identities into Material Design.