How do I change my safari icon?

I am running High Sierra 10.13.1 and many of my Apple system icons have changed all of a sudden. Half the apps in my apps directory have this icon...Driving me crazy

Here is what it looks like

Anyone know what is happening?

You should avoid or try to change the default safari icon or others application icon let the system work in a normal way , otherwise experimenting sometimes leads Mac user to install the operating system once again .

Might be a corrupt .plist.

Do a backup, preferably 2 backups on 2 separate drives.

Go to Finder and select your user/home folder. With that Finder window as the front window, either select Finder/View/Show View options or go command - J. When the View options opens, check ’Show Library Folder’. That should make your user library folder visible in your user/home folder. Select Library. Then go to Preferences/com.apple.finder.plist. Move the .plist to your desktop.

Re-launch Finder by restarting the computer and test. If it works okay, delete the plist from the desktop.

If the same, return the .plist to where you got it from, overwriting the newer one.

Thanks to leonie for some information contained in this.

You can't alter signed Apple apps.

You shouldn't be able to change iTunes' icon either unless you disable SIP.

Let's put it this way. I can't change the iTunes icon. Perhaps someone else will have an answer for you.

I'm having the same problem with the suddenly changed icons. Hoping someone replies to help. Driving me nuts too!!!