Assigning present-state CSS colors within components

Hi Folks,
Got a ton of components on my site that I use for navigation. Nav Bars, Button bars, etc. Any given component might therefore link to 20 or 30 subpages.
Simple question: How do I assign present-state colors to a given button within a component?
For example: a Nav Bar component has buttons that will lead a visitor to any of a dozen pages. The Nav Bar therefore looks the exact same on every one of those twelve pages, but I'd like the button indicating the present (or current) page to be a different color. The button for page 9, for instance, should have a different color (or current state) when the visitor is actually on page 9.
The challenge: how to pull this off when the button to be highlighted exists on a component, rather than on the individual page file itself?
This might not be as hard as it sounds - I'm basically looking for the appropriate CSS tag.
Many thanks -

Okay, so after getting almost no views and getting zero replies here, I've found the answer. The answer is NO, this can't be done. Well, at least the part about being able to use variables within the css file. See details at:
http://forums.adobe.com/message/2645929#2645929
I found some discussion of people hoping that it will be possible in the future to have variables within css, but that would still not provide what I was looking for in Flash Builder. Perhaps a pre-processing program could be written that would inject colors into the mxml, skin, and css files, but I'm not sure how well that would play with the FB IDE. And even with such a thing, going back and forth with changes could be a problem.
So I guess we're stuck doing it the hard way.

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try:
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Hello everyone,
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Attachments:
Image Processing.png ‏77 KB

Patrick,
The example you linked does have some characteristics of the system I wish to create. Unfortunately the example does not go into much detail about "labeling particles" by their color value. I have a strong understanding of how image particle analysis works. But fall short when is comes to the most efficient way of doing this. This is more of a optimization question, rather than a image analysis query.
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In plain English, I want to input an image and find the center of mass of three color, or color ranges.
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Taylor S. Amarel
Learning is living.
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"If we did all the things we are capable of, we would literally astound ourselves."
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