Hi, i would like to tweak a theme for GUI interface (pic attached). Where would I find the documentation related to this? Such as moving or replacing the toolbar and Size of the app tab.
description for pic :
- Blue : Tab to be spread equally to the window screen
- Red : Some tools i need to remove and add some line between categories
- Green : add group name
- Yellow : change default size and font
- save or export themes so i can install to my colleagues
Any help appreciated, thanks 
nb: im using LO 7.0 with Notebook Bar