Dark Cloud automatic finding script — Indicator by HPotter

Hi
Let me introduce my Dark Cloud automatic finding script.
This is a bearish reversal pattern formed by two candlesticks within a uptrend.
Consists of an up candlestick followed by a down candlestick which opens lower
than the prior candlestick and closes below the midrange of the prior candlestick.
It is the reverse of the Piercing Line.

Open-source script

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.

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////////////////////////////////////////////////////////////
//  Copyright by HPotter v1.0 11/04/2014
//    This is a bearish reversal pattern formed by two candlesticks  within a uptrend. 
//    Consists of an up candlestick followed by a down candlestick which opens lower 
//    than the prior candlestick and closes below the midrange of the prior candlestick. 
//    It is the reverse of the Piercing Line.
////////////////////////////////////////////////////////////

study(title = "Dark Cloud", overlay = true)
barcolor(open[1] < close[1] ? open > high[1] ? close < close[1] - ((close[1] - open[1]) / 2) ? close > open[1] ? yellow :na :na :na :na )