EMA indicator alert or change color

Hi folks.

I am looking for an Exponential moving average what gives an alert or change color when the price is going lower in an uptrend and vice versa
by a downtrend

for example on a 5 minute chart

time 15.40 the EMA 12 is 1,3940
time 15,45 the ema 12 is 1,3946
time 15,50 the ema 12 is 1,3952
time 15,55 the EMA 12 is 1,3945..he is not in uptrend anymore,,for that I need an alert or changing collour ema.

Can somebody make this..
Kind regards.

Here an chart example...