Examine source code of Retro Santa

{
  "name": "Retro Santa",
  "manifest_version": 2,
  "version": "2.1resigned1",
  "theme": {
    "images": {
      "theme_frame": "Santa.png"
    },
    "colors": {
      "frame": "#377a2a",
      "tab_background_text": "rgba(217, 232, 184, 1)",
      "toolbar": "rgba(255, 255, 255, 0.06)",
      "toolbar_field": "rgba(0, 0, 0, 0)",
      "toolbar_field_text": "rgba(244, 255, 219, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{6ac0150b-4c19-433d-896d-70985a2fff4c}"
    }
  }
}