getDate to dynamically mark recent changes?

Hi guys. I have a question regarding getDate, I’m not sure if this is entirely possible or how to go about doing it so bear with me.

I’m making a blog/journal in flash that I will manually update, and there will be a list of entries in a menu. I would like the newer entries tinted red so they are obviously new at a glance. I would like them to stay red for a week, then automatically remove the tint.

So I’m guessing that when I manually update the entry, I could just plug in the current date into a field in the AS, and it would use the computers clock to find out if a week had passed or not.

Would that work? If so I would really appreciate if someone could point me in the right direction.