A technique used in demo programming to make an object look shiny that hails from the days when computer displays had 256 colour indexed palettes.

By reserving about 16 different colour indexes and changing their rgb values, a programmer can change every pixel on a VGA using that colour without redrawing anything. By changing the order in which the colours change, one can make an object look like metal reflecting light, like fire or make it seem to move.

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