Examine source code of The Grudge (Blood)

{
  "name": "The Grudge (Blood)",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "oie_SW26twuFayyC.jpg"
    },
    "colors": {
      "frame": "rgba(0, 0, 0, 1)",
      "tab_background_text": "rgba(255, 255, 255, 1)",
      "toolbar": "rgba(255, 255, 255, 0.2)",
      "bookmark_text": "rgba(255, 255, 255, 1)",
      "toolbar_field": "rgba(255, 255, 255, 0.27)",
      "toolbar_field_text": "rgba(255, 255, 255, 1)",
      "tab_line": "rgba(0, 0, 0, 0.38)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{4f2f8081-ee46-4678-a678-38b050a218fb}"
    }
  }
}