ADX and DI With Coloured Histogram BUY/SELL

We display here the ADX has a colored histogram, which is
- green when ADX and DI+ are higher then DI-, while the ADX is increasing, meaning that we are in a potential uptrend--> we should rather be long (only buy if you have other concordant signals !)
- red when ADX and DI- are higher then DI+, while the ADX is increasing, meaning that we are in a potential downtrend --> we should rather be short (only sell if you have other concordant signals !)
- not visible if none of these conditions are met, meaning that the indicator do not show a potential trend --> don't use this indicator to buy or sell at this stage