What do the different color spots on the bottom of a Coors light can mean?

Question

ive heard that the different color spots (yellow, green, red, blue) show what part of the barrel the beer came from. (top of the barrel = blue i think? and red = bottom of the barrel)... has anyone heard of this? i cant find any documentation online.

Answer 1

i think it has to do with anything that is brewed, it may indicate what batch it came from