Friend of the Night

 is a perk in Fallout: New Vegas.

Effects
You are a true friend of the night. Your eyes adapt quickly to low-light conditions indoors and when darkness falls across the post-nuclear wasteland.

This perk causes a noticeable increase in brightness at nighttime and shortly after entering any area with visibility. 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 night. Because of this, some players might find it annoying, as it ruins the atmosphere of the Mojave Wasteland.

Trivia

 * The blue-tinted nightvision is very similar to the visual effect caused by "Night-Eye" spells in Bethesda's Oblivion.


 * Possible reference to Scottish rock band Mogwai's song titled "Friend of the Night"