This RSI indicator is one of my favorite indicators. This powerful indicator is implemented by Phi-Deltalytics. I modified the drawing so that it is easier (at least for me) to see the signals and trends (it would not matter if you're doing algorithmic trading).
Trends and signals. For detailed instructions and tutorial see Phi-Deltalytics page
リリースノート
The corrected fill color: Red for down trend, green for up trend