@manishbharadia1, I'm sorry but I can not explain that system as that is a copyright study material from them and before learning it we entered into a contract not to share it outside that student group.
Some people are reporting that they can't see blue colored candles even after applying this. In this case follow these steps:
1. Click on the down arrow for "Boring candle" on top left of the chart.
2. Then select "Visual order"
3. And finally click "Bring to front"