Updated, now with colours!
study(title="10-500 EMA - V2 - Rainbow Edition", overlay=true) src = input(close, title="Source") len0 = input(10, minval=1, title="#1 10") out0 = ema(src, len0) len1 = input(17, minval=1, title="#2 17") out1 = ema(src, len1) len2 = input(38, minval=1, title="#3 38") out2 = ema(src, len2) len3 = input(80, minval=1, title="#4 80") out3 = ema(src, len3) len4 = input(125, minval=1, title="#5 125") out4 = ema(src, len4) len5 = input(200, minval=1, title="#6 200") out5 = ema(src, len5) len6 = input(300, minval=1, title="#7 300") out6 = ema(src, len6) len7 = input(400, minval=1, title="#8 400") out7 = ema(src, len7) len8 = input(500, minval=1, title="#9 500") out8 = ema(src, len8) o0 = plot(out0, linewidth=1, color=red, transp=0) o1 = plot(out1, linewidth=1, color=yellow, transp=0) o2 = plot(out2, linewidth=1, color=lime, transp=0) o3 = plot(out3, linewidth=1, color=aqua, transp=0) o4 = plot(out4, linewidth=2, color=#FF00FF, transp=0) o5 = plot(out5, linewidth=3, color=red, transp=0) o6 = plot(out6, linewidth=4, color=maroon, transp=0) o7 = plot(out7, linewidth=4, color=maroon, transp=0) o8 = plot(out8, linewidth=4, color=maroon, transp=0) fill(o0,o1, color=red, transp=60) fill(o1,o2, color=yellow, transp=60) fill(o2,o3, color=lime, transp=60) fill(o3,o4, color=aqua, transp=60) fill(o4,o5, color=#FF00FF, transp=60) fill(o5,o6, color=maroon, transp=60) fill(o6,o7, color=maroon, transp=60) fill(o7,o8, color=maroon, transp=60)