improvement request: favori.ico to a mark instead of a face

[Jerry Yu]

Currently the favori.ico has the red angry face if I have one RED and
a few YELLOW, acknowledged or not. I'd appreciate if it can be a MARK
in corresponding color instead.
This is most helpful if one has the bb page tabbed in Firefox or
alike. This way, one'd know all is or is being taken care of, w/o
jumping to the page. Besides, it is more logically consistent.