In Chrome, the favorites "star" icon changes from just an outline to a solid color when the page you are on has been marked as a favorite. It would be nice if the "Saved to Zotero" icon had similar behavior. Low importance but maybe some developer is looking for something "small" to do?

p.s. I came to Zotero about a week ago after deciding that I didn't want to pay to upgrade EndNote (a third time) and finding that Sciwheel just didn't fit my workflow. So far, I'm quite happy with it!