Quote from sunsetisles:
xburbx,
Each bar is a real-time video of the continuous, two-way auction market in which buyers compete with other buyers as do sellers with other sellers.
Price movement occurs: when buyers/sellers become most aggressive, buyers taking offers, as opposed to waiting for bids to be hit; sellers become most aggressive when hitting bids rather than waiting for offers to be taken. Based on contract volume, relative buyer aggressiveness is visualized by green bars of different shades. Relative seller aggressiveness is measured by red bars of different shades. Contract volume may be filtered to exclude trades less than X contracts to isolate large traders.
Reversal bars, orange and yellow, are based on a proprietary algorithm which analyzes ticks. (Today's markets are dominated by algo trading which slices and dices size in the attempt to disguise intentions.)
White reversal bars are based on a proprietary algorithm which analyses contract volume.
(Before the dominance of electronic markets, floor traders obtained this information by proximity to order flow.
From personal experience, I can tell you that this edge was better than an ace up your sleeve. My tools attempt to visualize this information on screen.)
Orange, yellow and white bars may be continuation bars depending on their location in the swing leg.
As previously mentioned, confluence is all important...reversal/continuation bars at static or dynamic s/r's as well as intra-channel reversals and channel breakouts and breakdowns.
Hope this helps.