Colored lighting is a feature in which the ambient light of given sectors can have a tint. The port of Doom to the Sony PlayStation made heavy use of such a feature to compensate for the simplification of textures and level geometry. Doom 64 has a particularly sophisticated colored lighting system, where each sector can have up to five different colored lights, each affecting one particular type of element in the sector (actor sprites, floor, ceiling, wall, etc.).
A simpler implementation of colored lighting is used in Boom through the use of custom colormaps. However, instead of affecting only the content of the sector, it affects the entire level as long as the player is within the colored sector.