Friend of the Night

 is a perk in Fallout: New Vegas.

Effects
This perk causes a noticeable increase in brightness at nighttime and shortly after entering any area with low light conditions. The effect is not a gradual one, and its presence can be recognized by a colored tint on the game world reflecting the dominant color of your surroundings (most often light blue when outdoors).

Keep in mind that once taken, the perk will always cause you to see the world differently at night. Because of this, some players might find it annoying, as it ruins the atmosphere of the Mojave Wasteland.

The usefullness of the perk is debatable, usually not giving enough lighting in Low Light situations, but washing out colour and being aggravating when out of combat, arguably increasing brightness is a good substitute (if a bit gamey) than using up a perk slot.

Bugs

 * This perk seems to follow the clock rather than ambient lighting conditions. During daytime hours in a cave you have far less light than inside the same cave at night.
 * Cancels out the effects of the Varmint Rifle Night Scope