This will plot the 8, 13, and 20 EMA's on your chart.
study(title="kalit15min EMA 5/20/50/200", overlay=true)
short = ema(close, 5)
longer = ema(close, 20)
llonger = ema(close, 50)
lllonger = ema(close, 200)
plot(short, color = orange)
plot(longer, color = blue)
plot(llonger, color =green )
plot(lllonger, color =red )
By default, this script shows 7 different EMAs set to 5, 10, 20, 50, 100, 150, 200 intervals. If a bar closes below one of these EMAs, the respective EMA will turn red otherwise it will be green. 50 and 200 EMAs have double the linewidth of others.
This simple indicator projects 4 EMAs above and 4 under the main EMA group.