Both colors looks very nice on Moto Z2 Play.
Yes, Moto Z2 Play does have fingerprint sensor.
Yes, it does support 4k Videos shooting as well playback.
Moto Z2 Play thickness is just 5.99 mm. This is one of the thinnest smartphone in the world.
Moto Z2 Play has protection against water. It comes with water repellent nano-coating.