How to programmatically set the title text color in the OSX Terminal?

I have a script that runs in a tabbed terminal window which will periodically update the tab's title with some text using:

printf 'e]1;Some Texta'

This works great, but I'd like to take to take it a step further and colorize the text under certain conditions. I can set the actual terminal's text color by doing something like:

printf 'e[31mRed Text'

but, I can't quite figure out how to make this apply to the tab's title.

I guess there are really two questions here:

1. Is it even possible to change the color of the title text in the window/tab (specifically for OSX's Terminal)?
2. If it is possible, what sort of magic is necessary to make this happen from a script?

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