Highlight bars according it's volume releative to near candles. This script usefull for VSA trading.
Red bar - extrime high volume
Orange bar - volume is high
Grayish bar - volume is normal
Green bar - volume is low
Blue bar - almost no volume
This indicator takes market volume and organizes it into wave charts, clearly highlighting inflection points and regions of supply/demand.
Try tuning this for your instrument (Forex not supported) by adjusting the "Trend Detection Length". This "clubs together" minor waves. If you like an oscillator-kind-of display, enable "ShowDistributionBelowZero" option....
HawkEye volume, developed by Nigel Hawks, is supposed to be a premier VSA indicator. Documentation on this is scarce (looks like the training seminars/sessions conducted by the parent company cover this in detail), if you come across any (other than what I have mentioned on that chart) do let me know.
I am not sure how much this resembles the commercial...