Correct; it's HIDEOUS!it is not (IMO)
By chance do you have screenshots showing the elements that changed from early beta to current release? That would be interesting for comparison, as I did not participate in any of the beta's.It was better in earlier betas. But the flat UI crowd just had to send their feedback so Apple turned it once again into more of the same. Same for iOS 14, it's still stuck in iOS 7's UI design, complete with iOS 7's music icon coming back.
I haven't found a single theme engine that works past Yosemite. I can't even change any icon of system apps with SiP off. I can't even revert the traffic lights to the glossy Snow Leopard versions. Best I can do is replace the stock apps with skeuo alternatives I found by scouring the Mac App Store, and hide the others somehow by shoving them into a folder on a far-off place I'll never look for.
Let me know when there's a way (paid, in fact, I'll do anything) to get the Montain Lion UI back. Because so far the best I can come up with is running Parallels and Linux full screen in front of Big Sur.
csrutil disable
csrutil authenticated-root disable
df -h
or
diskutil list
sudo mount -o nobrowse -t apfs /dev/disk4s5 /Users/<YOUR USER NAME>/livemount
sudo /Applications/ThemeEngine.app/Contents/MacOS/ThemeEngine
/Users/<YOUR USER NAME>/livemount/System/Library/CoreServices/SystemAppearance.bundle/Contents/Resources/Aqua.car
sudo bless --mount /Users/<YOUR USER NAME>/livemount --bootefi --create-snapshot
What will likely happen is what usually happens when I post my preferred UI screenshots:well, at least now you have the means to change it all. it will need some work and patience though but yes, from what i've seen about themeengine, i see no reasons this couldn't be achieved right now. for example changing traffic lights would just be a matter of drag and drop the asset you like visually in place of the new one. you could also design your own in pixelmator or such, but i think digging into apple old assets and copy/paste/drag and drop them into bigsur's aqua.car will be faster. anyway, i hope you persevere with it and do succeed. i'll be interested to see your results. possibly use your *.car files too.
sudo apt-get install mate-desktop
sudo apt-get install cairodock
If I can go deeper, such as bringing back the glossy traffic lights, the Aqua buttons, metal brushed look in iTunes, etc or the skeuo calendar, Coverflow, all that, I'd be more than happy to share it. So far I want to start by changing the Finder, Safari, System Prefs, etc system icons to their counterparts in Mac OS X Mountain Lion, and getting those traffic lights back, and if I can accomplish that, go farther with bringing back Mountain Lion OS X apps in place of those system apps.
I've been angry since Yosemite released (was able to downgrade my old 2012 MBP until the HDD and mobo gave up the ghost) and iOS 7 released (and self-installed in the night while my iPad and iPhone 4 were plugged in). I came back to Apple after 6 years now in a mixed environment of old Samsung devices, an iPhone 6S, iPad 6, iPod touch 6, Apple TV 4K and regular Apple TV, and a new MacBook Pro. While I appreciate Apple dialing back some of the crazy of iOS 7 (such as signal dots, frosted glass, the bare looking Control Center, and battery icon) it still looks otherwise the same and that bugs me. Flat UI design bugs me. I might prefer 80's music, but most of the 80's was a disaster in regards to interior design, fashion, and especially computer UI design. Reliving it in a modern sense is, well, disturbing to me. And there seems to be no way out other than using old devices that are dying since VoLTE is being mandated.
Even small things such as round contact photos bug me (why is that even a thing, and even this forum commits that sin! Why did they go from square to round? what dictate of flat design required it?)
It doesn't help that I notice even the smallest thing. I can spot a vehicle in a full parking lot with a missing license plate, or a random 4-leaf clover without even trying, so noticing annoying UIbugsfeatures annoys me.
I kind of agree. To me, the Big S doesn't look like a change to IOS. It works the same and looks the same as as OSX before it. The slightly different look to the icons and such disappears after a short while, and within a week a user would have to find a machine with an old system to remember the differences.personally, am glad that apple doesn't design it's OSes based on the whining of 11 people on a macrumors forum...
For me, Big Sur Mail is too 'simple' for lack of a better term. It feels more like a widget than the desktop app it once was. No more toolbar, no way to (that I could figure out how to anyway) switch inboxes or folders.
Dark mode and dark UI exists for a reason. It's compensating for a 'feature' of flat design known as whitespace or padding. Obviously they're admiting a problem exists but won't fix the actual problem (lack of 3 dimensional depth) and features such as dark mode, dark UI elements, and night shift are mere compensations for the eye strain caused by flat UI designs.
Back in the monochrome era, many old dumb terminals had an amber background with black text. to compensate for eye strain caused by continual staring into such a display, a 'reverse video' switch was there to switch to amber text on black background.