When i look at the main channel, i would say it’s look like repainting version of nadarya : the channel can go down or up before price do, which mean it behave like it’s knew what will happen next…
Also the main channel move are very smooth. You can’t have both smooth moves (which need high period) and fast reaction (which need low period).
Other thing, upper and lower bands seems to not react at same time (not same deviation up and down, or 2 differents sources for the calculation of upper and lower bands)
For the green and red area, either there is a second channel crossing the main one, either some king of macd (difference between 2 averages) that is added either at the upper or lower band of the main channel…
But maybe i’m wrong ?