Please help me to add histogram in four colors
+ve histogram when rsi makes +ve cross with BB midle line (Rsi above BB midle and RSi moving up = Green, Rsi above BB midle and RSi moving down = light Green)
-ve histogram when rsi makes -ve cross with BB midle line (Rsi below BB midle and RSi moving down = Red, Rsi below BB midle and RSi moving up = light Red)