Hi Demag
On the chart I supplied fisher did actually change colour, it's just that I placed the lines over the top (and covered the red fisher line) to show where the trade is.
Remember also that I only take trades in the direction of the trend, 50ema below 120 ema...Sell 50 ema above 120 ema....Buy.
If there is a buy signal for instance, price has crossed up the 50 ema and next bar opened above the 50 ema but the 50 ema is below the 120 ema I do not trade, the chances of a decent move in that direction is not generally good.