Greybox and user settings

Hello and first of all thanks for this great module!

I'm somewhat new to drupal so I hope you can help me out with this one.
Would it be possible to have user themselves choose whether greybox should be used in links or not, and in what size (width - height) greybox should open with? Just like the administrator settings, except only on a per-user basis, not sitewide. (and without the class-setting)