Update VolumeColumn.js

[DekusDenial]

should compare the immediate "open" and "close" for the tick, not with previous tick

[LeoAlvarez]

No, it's with the previous tick.
http://stockcharts.com/help/doku.php?id=chart_school:chart_analysis:candlevolume
If it's an up day, the volume bar is green (close > previous close); a down day, volume bar is red (close < previous close).

[charliehartel]

The color of the volume bar should correspond with the color of the candle stick to indicate whether there was accumulation or distribution. If the current/closing price of a bar is below the open, then candle and volume are red. If the current/closing price is above the open, the candle and volume bar are green. Here are two references from TrandingView and ChartIQ.

[LeoAlvarez]

TradingView/ChartIQ (same thing0 have a particular interpretation, is what you're getting at, and they seem to be in the minority. I've added a few things I found below.

The default will be as I've stated previously (based on close of previous tick). Adding a configuration parameter for the other case. So, the default is to base the color same as the price color, the previous tick; and, add a config param to handle the case for using the current open.

http://investorshub.advfn.com/boards/read_msg.aspx?message_id=62844129

"The color of a volume bar is determined by its corresponding price bar; blue if the most recent trade is equal to or greater than the previous period’s last trade, and magenta if it is less than the previous period’s closing price."
http://www.marketsmith.com/stock-charts/how-to-read-stock-charts/
and
http://investdaily.custhelp.com/app/answers/detail/a_id/474/~/what-do-the-colors-signify-on-the-price-and-volume-bars-in-the-ibd-charts%3F