This indicator employs the functions of the Aroon indicator in a unique way that works better than the original Aroon by far. I've included examples of signals with vertical green and red lines in this chart. Some have red X's, denoting failed signals. In a strong uptrend, sell signals can be overridden by the trend and you must have other techniques or indicators to guide you as to whether the reversal is likely to occur. In a strong downtrend, similarly, buy signals can be overridden by the higher trend.
Enjoy, and let me know what you think.