ET member Nitro does custom programming jobs in exchange for a fee. You can have the exact software you seek, as long as you're willing to pay for it.
If you use QT (if not, get it free), just add a paintbar: if (Bar High-Bar low)>{your #} set color to {your color} You can also attach an audio/flash/popup alert to it.
Wow, awesome. I downloaded it, got it working with my Esignal feed, set up the paintbar rule as you suggested, and it's working great! Thanks so much! +-*/ Math_Wiz