I just "returned" back to firefox, been using Chrome for about a year. I missed the customizability via add-ons, which are way lacking in Chrome.

The problem I'm having is, that I've gotten used to instantly see if a I've already bookmarked current page to Diigo. Chrome's Diigo extension's button shows a red flag, if the current page is bookmarked. I missing this on Firefox extension.

Am I missing some option in preferences or is it simply unimplemented in Firefox extension?
Btw, I have Diigo toolbar hidden, because all it does is takes up space. I moved "Bookmark to Diigo" to the top of context menu. Now it takes me split second to bookmark a page.