In February of this year I featured a Monster Energy Ultra Rosa can. It had a red/pink top which matched the color of the rest of the can. But recently I ended up with this silver-topped version pictured below.
In January of this year I featured a Monster Energy Ultra Sunshine can. The words "Zero Sugar" were printed in white. Recently I ended up with this "Zero Sugar" can with the words printed in black.
So it depends on how far you want to take your collection. Are you happy with just having one can for each flavor? Or do you feel the need to find every version of that flavor, all color differences and variations of text?
I've gotta collect them all!