color code not working

Here is my script. It just changes bars to blue and yellow. Though i see there are candles which satisfy green and red. Please can anyone help? Thanks in advanace

if (close > open) and ((high-low/2) < (close - open))
c:=color.green
else if (close > open) and ((high-low/2) > (close - open))
c:=color.blue
else if (close < open) and ((high-low/2) < (open - close))
c:=color.red
else if (close < open) and ((high-low/2) > (open - close))
c:=color.yellow

barcolor(c)

Hello

Are you sure?
If the candles are never green for example, it means the (high-low)/2 is never lower than the (close - open)

You should calculate/display the (high - low/ 2) and (close - open) on your charts to debug