Bolding/Highlighting Formula results
I've created a very lengthy order form – made in InDesign, brought into Acrobat Forms (below), I need to somehow get the total price to get bold, change color or have the form box change color when items are added to the order. I don't want it to change until the numbers other than the default '0.00' appear. Make sense? Here's one part of the form...

There are many of these on each page with 6 pages total so it makes things so much simpler to find orders if the color or something changes. I don't know if a similar thing can be done in Excel which could be done in a similar way in a pdf form? Any information would be greatly appreciated. I need to figure this out asap.

-preferred