I've tried searching the web for this but couldn't find any solutions for my specific question. Often times when working on large projects I frequently have many tabs open with the same favicon. I also need to switch between tabs often, keeping them open for reference.

My question is does opera feature a shortcut or extension that allows to me to switch back to whichever tab I was most recently viewing. This isn't which tab I most recently closed but whichever one I clicked away from. If there is no shortcut, is there a way to highlight the most recently viewed tab in a slightly different color so it makes it easy to click back to?

Thank you in advance!