The rectangles are potential zones of support/resistance. They also indicate potential tendencies of the sentiment of the market through the pairs of similar color and their relative position (going up or going down). Icons are relative price predictions in time, similar to targets that can be hit. Around the marked time stamps potential pivot points or exceptional events can occur.
This is a project similar to previous ones (Matrix Style) and is also looking at candlestick patterns near the shapes, rebounds or bounces with candlestick shadows, or small coincidences in the price action relative to the elements in the snapshot. This is for the swing trading enthusiasts that seek to maximize gain and minimize risk. For better understanding the general context and approach, the linked idea with previous results can be analyzed.
Always trade with a plan, manage risk, asses all probabilities, and may the force of profits be with you!