The program will give green arrow on buy signal and color the candles green until sell signal appears. When sell signal appears, a red arrow will appear on the chart and candles will be colored red until the next buy signal appears. More about the program here.
Source code of the program hasn't changed at all or tweak since then. The results may be short of amazing to some. But my main point is - if someone with programming background and no financial training can create tools like this, imagine what kind of advanced tools WOULD the big financial institutions have at their disposal??