there is an ability to updated app’s icons with a custom one.
man : Changing icons of built in apps in Sonoma - Apple Community
I used to use it until it stopped to work. in finder app uses new icon, but in app switcher default on is used.
I do understand this is a feat with a super low pri. but the fact that it used to work and then stopped makes me really upset. I do not have exact date/version when it stopped to work, but its around 0.48 (I still have 047.x on my 2nd laptop which does work)
env
macos: 15.4
cursor: 0.49.4
apple silicon (if thats matter)