I appreciate the alternative ideas, but first, back to my question in the OP...
How hard would it be for me to make the "Gray Star Outline"/"Yellow Star" by myself in something like Inkscape or Gimp??
(Since this is a Graphics forum, I assume you guy know how to use tools like Inkscape...)
===> The end-effect that I am going for is how Gmail and/or Yahoo Mail allow "starring" of messages.
Gmail has 3 states: Star with Grey Outline, Star with Darker Grey Outline (Hover), Yellow Star (Clicked)
Yahoo Mail also has 3 states: Light Solid-Grey Star, Darker Solid-Grey Star (Hover), Yellow Star (Clicked)