The Material Design keyboard on the latest Android 5.0 Lollipop looks sleek with borderless keys, number row on top and new color scheme. You can get this Material Design-inspired Lollipop keyboard on any phone and tablet running Android 4.0 ICS and above without root access and without uninstalling the original Google Keyboards from your device.
The Lollipop keyboard ported from the final build of Android 5.0 Developer Preview (LPX13D) by an XDA member Shaftamle works well on any Android device (requires Android 4.0 ICS and later devices). The only issue is landscape mode crashes on some apps.
Lollipop keyboard Installation Instruction
1. Installing Lollipop Keyboard on your phone is simple. Just download (18.9MB) the Lollipop keyboard APK file [HERE] and install it (remember to enable “Unknown Sources” option from phone’s Settings under Security).
2. To enable the keyboard, open your phone Settings, tap on “Keyboard” or “Language & Input” option, and turn on the “Lollipop Keyboard”.
3. Now, to give your keyboard Material Design look, tap on the settings icon next to Lollipop Keyboard and go to Appearance & layouts, then select “Material Light” from the list of themes (source)