I added many alerts along with the and alerts when the crosses over the Upperband or crosses down on the Lowerband.
I personally use this indicator with Crypto charts ( Bitcoin on a 15min, 1hour, and 4 hour timeframe) as one of many confirmations that it's a good time to enter a trade. This script was made to be easy to follow with the colors of GREEN triangles being a good uptrend or entry confirmation, and RED being a confirmation to sell/short or exit your trade.
It's important to use this indicator in combination with other indicators that can give you more confirmations to enter or exit a trade, and make sure you are on normal candles and not HA or any other candles as you can get wildly inaccurate results.
This script also has the Death & Golden crosses, which is the slow and fast moving averages crossing over each other. I don't use this as an additional confirmation, it's just nice to know where the cross happens.
In true TradingView spirit, the author of this script has published it open-source, so traders can understand and verify it. Cheers to the author! You may use it for free, but reuse of this code in a publication is governed by House Rules. You can favorite it to use it on a chart.
Blue candles (with red outline/halo): Means the temperature(and trend) is dropping, and the bears are in control.
Yellow candles (with red outline/halo): Yellow candles are normally bullish, but that red is causing too much fear to be effective.
Blue candles (with green outline/halo): Slight uncertainty in movement - check the volume color to see which way the trend is moving.
Yellow candles (with green/blue outline/halo): The Suns out and it looks like an uptrend is on its way.
Doji (with outline/halo): Signs of impending action, red and the trend is its heading south, green and the strength is with the Bulls.
Blue candles (with a red outline/halo): The market is continuing its downward trend.
Blue candles (with a green outline/halo): Things are on the turn, better times ahead.
Blue Doji (with a green outline/halo): Is a bullish sign to the upside.