I don't see much difference when searching the HTML with Opera and Firefox. Firefox highlights the whole line where it finds ".jpg" while Opera highlights just ".jpg" on the line. They both have previews when you hover over them.
I couldn't reproduce the issue in the pic where Opera found 70+ occurrences while Firefox found 22. When I tested in Opera, Opera found only 22/23 also. Opera did search for ".jpg" in a script on the page while Firefox did not though, but that was about it.
Both Opera and Firefox find next when you press ENTER in the search field.
So, Opera is pretty darn close to Firefox already. But, I understand if you want it to be exactly like Firefox.
@leocg It should be changed for the same reason that you wouldn't use flourescent green or yellow; it's displeasing to the eye. Look at some publicity photos of Madge in the 80's and you'll get an idea. It's just bad design principle. It's the colour of old. It's a Florida-retirement-village-no-under-55's-allowed colour. Is that a good enough reason to rid us of this abomination?
@concretable A lot of the time I have too many tabs open to read them anyway (69 right now). I do quite often make use of tab search, which I'd probably use. Typing just a part of the page title or site name is generally enough to find what you want. The incremental search works well.
(I customised Opera so that the instant search does tab-search by default using F2).
@seancwopera Personally I've found that no one browser is better than all others in every respect. It's one reason I have several installed.
With respect to what i choose as default it's a matter of weighing up the pluses and minuses. It was very hard to shift me from Firefox as default. But eventually the shift from Classic to Quantum had just enough annoyances to make me call it a day.
I'd had Opera installed as an alternative from even before Firefox but, for various reasons, it never made default. But I'd always kept an eye on it. When it moved to Chromium I then, after a while, noticed that its usability was superior to Chrome's from my point of view, so I started using it as a better Chrome for use cases where I needed Chrome-like behaviour. E.g., as a freelance software developer at most sites the developers are using Chrome and typically debugging through Chrome. So I would substitute Opera instead to get a similar experience. Or sometimes I would use Chrome for debugging but switch to Firefox for regular browsing.
Meanwhile at home, after a certain amount of tweaking and extension discovery, I was able to decide that the Opera experience was now better overall than my Firefox one.
I still have Firefox installed and do keep an eye on what they're up to but I'm probably unlikely to return now - especially as I now have a political beef with Mozilla. Though my switch was independent of that.