TDStochastics

study(title="TDStochastic", shorttitle="TDStoch")
length = input(5, minval=1), smoothK = input(2, minval=1), smoothD = input(3, minval=1)
k = sma(stoch(close, high, low, length), smoothK)
d = sma(k, smoothD)
plot(20,color=black)
plot(45,color=black)
plot(55,color=black)
plot(80,color=black)
plot(k, color = black, style=line) 
plot(d, color = change(d) <= 0 ? red : lime, style=line)