Rainbow EMA

study(title="Rainbow EMA", shorttitle="Rainbow EMA", overlay=true)
src = close, 
lengthA = input(37, minval=1, title="LengthA")
lengthB = input(39, minval=1, title="LengthB")
lengthC = input(41, minval=1, title="LengthC")
lengthD = input(44, minval=1, title="LengthD")
lengthE = input(47, minval=1, title="LengthE")
lengthF = input(50, minval=1, title="LengthF")
a = ema(src, lengthA)
b = ema(src, lengthB)
c = ema(src, lengthC)
d = ema(src, lengthD)
e = ema(src, lengthE)
f = ema(src, lengthF)
plot(a, color=#00A8D6)
plot(b, color=#00A8D6)
plot(c, color=#00A8D6)
plot(d, color=red)
plot(e, color=red)
plot(f, color=red)