It's a gimmick to get you to buy the cereal, but once you get to the toy at the bottom of the box, it's just a cheap useless piece of plastic, and not worth buying the cereal you normally wouldn't buy, just for the toy. This is the case here, a gimmick that does work, but not worth the eight colorful episodes that are basically a two-hour movie spread thinly to make a series, and really not offering up anything revolutionary that hasn't been done before, and much better. If you enjoy this genre and haven't seen Money Heist yet, watch that instead of this, it's 1000x better.
But if you are still curious about this series, then I suggest to watch this in the following order: yellow, violet, orange, green, blue, red, pink. If you leave out white, your imagination would probably be a better resolution. If you're binging like I did, wait a week to enjoy your imagination's of heist day, then watch white to compare your ending to the finale... you'll get the most enjoyment this way. The other more obvious and probably makes the most sense for simplistic viewing is to watch this in chronological order - violet (24 years before), green (7 years before), yellow (6 weeks before), etc.
