问题
I want to change Google sheet sidebar heading background color. Have any idea to change background color using app script or any manual setting. Please help.
回答1:
This is probably impossible. The title bar is outside of the iFrame. If there was a way to set this it would be documented in https://developers.google.com/apps-script/reference/html/html-output like the .setTitle() method. However, I see no methods to help in this situation. The best you can get is a titleless bar.
来源：https://stackoverflow.com/questions/63033914/is-it-possible-to-change-google-sheet-sidebar-heading-background-color