Examine source code of June Spyrine

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "June Spyrine",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "toolbar": "rgb(140, 30, 30)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(20, 20, 20)",
      "tab_background_text": "rgb(220, 220, 220)",
      "toolbar_field": "rgb(20, 20, 20)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgb(60, 120, 60)",
      "popup": "rgb(220, 208, 180)",
      "popup_text": "rgb(0, 0, 0)",
      "tab_loading": "rgb(60, 120, 60)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{ecb0d82f-84a5-44ee-9f25-c9147f185e29}"
    }
  }
}