Grey Of Light To Colour Of Dark

Colour diminishes as the light goes away. What if it were the opposite? The idea for this photo came to me while standing in the dim cool tunnel admiring the art down here with all it's brilliant colour. 

 I took this with the 16-80 at 16mm. 3 exposures on a tripod then in the computer did layers masks and adjustments (convert to b&w etc) on each of the 3 layers.