Examine source code of Milo Murphy's Law

{
  "name": "Milo Murphy's Law",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "Milo Murphy's Law Header for Firefox.png"
    },
    "colors": {
      "frame": "rgba(3, 3, 3, 0.5)",
      "tab_background_text": "rgba(0, 0, 0, 1)",
      "toolbar": "rgba(111, 181, 242, 0.03)",
      "bookmark_text": "rgba(240, 31, 31, 1)",
      "toolbar_field": "rgba(31, 155, 222, 0.3)",
      "toolbar_field_text": "rgba(214, 191, 40, 1)",
      "tab_line": "rgba(240, 40, 40, 0.4)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{e4f734b6-c99f-444b-884e-eb5a3a9781b3}"
    }
  }
}