Kreslik.com - traders community since 2006

Volume doesn't change because of a trade with that broker.
Volume changes because the price changed because enough trades happened somewhere among all brokers.
Not as accurate but still useful

2009.06.12 BETTER VOLUME UPDATE I was in the VSA chat room and something said my modified version of Better Volume never showed a "low climax". I was about to load some debug code when I got the idea to display the number of bars since each bar type ocurred!! Updated version of BetterVolu...

No, you can not change the bar colors in MT4 like you can in TradeStation. Yes you can. No easily but possible. Raghee Horner's GRaB indicator does just that 2 Greens, 2 Blues and 2 Reds, but it apparently takes three separate indicators. http://kreslik.com/forums/userpix/11539_GRaB_1.jpg