Corrected background color to match actual trend.
When background is green, you are looking for longs
When background is red you are looking for shorts.
If the background stays the original color during a pullback, its a confirmed pullback and no a trend reversal.
Light Blue Line = is a Volume filter showing you the HIGHS and LO's of volume as it changes. You can only trade in the new direction when volume breaks its previous HIGH or LO.
Purple line = Is a moving average to be used as an EXIT indicator. It tells you when the previous trend is over or when the pullback is over.
Once it crosses over the blue filter, you can also look for trades in that same direction as the crossover.