No lights room.
Room have black ambient light. Nothing is visible without lighting in scene.

Light Products
No Lights Room Directional Light-Cyan Directional Light-Purple Directional Light-Yellow Directional Light-Red Directional Light-Green Directional Light-Orange Directional Light-Blue Directional Light-White Point Light-Cyan Point Light-Purple Point Light-Yellow Point Light-Red Point Light-Green Point Light-Orange Point Light-Blue Point Light-White

Features:

Within room, lights can be rotated and moved in all axes and directions.

Increase light intensity by adding copies into the scene.