3 colors (red,yellow,green) and 20 switches are based on the Overbuy Support and Oversell Resistance(lines that my followers already know about)
Green is for the grow, red is for the price drop, and yellow is a NO TRADE ZONE (too much doubt)
Here you can see an example of a ETH/USD weekly chart: Pay attention to Overbuy Resistance line dropping before significant price drops
Here you can see another example of an ETH/USD daily chart You will always be "alerted" with a yellow cell when doubt comes to the market, and if you see a red cell during grow maybe it is time to consider short exit