See the little script icon up in the toolbar? That’s the icon of the app. Obviously, you can change it manually or with 3rd party apps such as Candybar. The conversion process is fast and painless ...

Replace the number 1 in the script with the tab you'd like to alter (the tabs are numbered 1 to 7, top to bottom). Replace the word "Materials" with whatever you'd like the tab to be named ...