Examine source code of LibreOffice Green

{
  "theme": {
    "images": {
      "theme_frame": "LO_persona_header.png"
    },
    "colors": {
      "frame": "rgba(229,230,232,1)",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "LibreOffice Green",
  "manifest_version": 2,
  "description": "Unofficial LibreOffice Persona adapted from the 'Shadow Intro' (by Andrea Soragna) splash screen"
}