(Please note - the formatting may get messed up if you apply the script for some reason. Click the indicator, hit "format", and remove the extraneous blue line if that happens).
Fun and interesting adding indicators to indicators. I have done, yet to publish a mod when I have bollingers I throw in a Keltner channel same period, basis and true range multiple equal to the BB (or in this case either of them, as long as match result the same) dev. I do not display the KC or basis I just use it to determine squeeze and change the color of the BB basis plot (your pmma above) for squeeze on (I use black) or off (I use lime) - squeeze on is (BB upper < KC upper) AND (BB lower > KC lower) in other words the BB is inside of the KC. Squeeze off is BB outside KC. Should have coded it, easier than describing! pmmacolor = squeeze on condition ? black : lime One of my more used in trading indics has a skinny BB with this, the BB acts like a fat 13 sma (default) and gives me a little more idea of volatility. tradingview.com/chart/OsBXckpZ/