This is the Tradescript code for heikin-ashi candle color change.

This code can be used for backtesting or in the EA to generate BUY and SELL signals on heikin-ashi strategy.

GREEN CANDLE FOR ZERODHA PI EA:

SET HC = (OPEN+HIGH+LOW+CLOSE)/4
SET HO = (REF(OPEN,1) + REF(CLOSE,1))/2
SET HH = MAXOF(HIGH, MAXOF(HC, HO))
SET HW = MINOF(LOW, HO, HC)
HO = HW

ALTERNATE ZERODHA PI SCANNER CODE FOR RED TO GREEN:

SET HA = (OPEN+HIGH+LOW+CLOSE)/4 AND
REF(HA,2) < REF(HA,3) AND
REF(HA,1) > REF(HA,2) 

RED CANDLE FOR ZERODHA PI EA:

SET HC = (OPEN+HIGH+LOW+CLOSE)/4
SET HO = (REF(OPEN,1) + REF(CLOSE,1))/2
SET HH = MAXOF(HIGH, MAXOF(HC, HO))
SET HW = MINOF(LOW, HO, HC)
HH = HO

ALTERNATE ZERODHA PI SCANNER CODE FOR GREEN TO RED:

SET HA = (OPEN+HIGH+LOW+CLOSE)/4 AND
REF(HA,2) > REF(HA,3) AND
REF(HA,1) < REF(HA,2)