Examine source code of Orion Nebula Complex

{
  "name": "Orion Nebula Complex",
  "manifest_version": 2,
  "version": "4.0",
  "theme": {
    "images": {
      "theme_frame": "Orion_Nebula_mosaic_002.jpg"
    },
    "colors": {
      "frame": "rgba(16, 4, 33, 1)",
      "tab_background_text": "rgba(255, 255, 255, 1)",
      "toolbar": "rgba(36, 16, 41, 0.63)",
      "bookmark_text": "rgba(255, 255, 255, 1)",
      "toolbar_field": "rgba(182, 211, 214, 0.75)",
      "toolbar_field_text": "rgba(0, 0, 0, 1)",
      "tab_line": "rgba(255, 85, 79, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{3ddfb38d-2b47-4aaa-a609-4b0d70a06473}"
    }
  }
}