Nice one Keris - many thanks.

Using it - think of the coloured bands as levels of support in a trend. We are in an uptrend on the last pic with price testing support on the lower bands. As price retraces through the other bands, the trend is weakening. A new bearish trend is falling into place as price retraces below the last band, and the coloured bands have reversed.

Load up a longer time frame like daily and you'll see the visual effect more clearly