Right! Area 51 is located in Nevada, United States, and is an unknown military base by ordinary people in what is believed, according to various books, films and testimonies, which keeps traces of alien life and secret experiments that do not can come to light.
In this military base, there are dozens of lights placed on the ceiling of the endless aisles. A ceiling lights square and an unusual color, although very appropriate as far as alien life is concerned.
We can find them as soon as we start the level, as long as we are inside the base and not the outside, since there we only see mountains and the construction of the base. The views are not very exotic, but neither do they have to be exotic. After all, aliens are not exquisite people.
What color were the lights?