Abstract: A light or lamp comprises a plurality of light sources, each said light source for emitting light of different color upon activation; and an electrical circuit connected to the light sources for alternately activating each light source responsive to successive accelerations, such as changes in direction of movement or vibrations, of the lamp by a user. A lamp for sports fans emits the team's colors successively with each movement such that a group of fans synchronously moving the lamps produce a field of similar color and movement.