color code/sort the links by age.

[fiveNinePlusR]

[SamHasler]

By age, do you mean by "opened" datetime, or by least recently viewed? Could we have both?

I'd like this if it was implemented like Trello's card aging. I don't mean the paper effect; just a solid color that darkens for older items.

[fiveNinePlusR]

I hadn't given much thought as to what the final form would be. It seems that something like Trello's card aging would work well. Not sure what information I can get out of the extension framework w.r.t. how long/many visits a particular url/tab/page has.