Come on Samsung I would have thought by now that a huge company like you would have released a theme app for your tablets by now, you do a great theme scheme on the mobile phones so why not on the tablets.
I know I can do 3rd party apps to change the theme, but would have thought that by now you would have released something..
There's one built into Android 12 so I doubt they'll bother now. Android 12 allows you to pick a custom colour palette to match any image used as the background. Couple that with the normal font foundry options Samsung provide across tablets and phones and that will be your lot without 3rd party tools