Examine source code of Orange and Grey Triangle

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Orange and Grey",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "left bottom"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(67, 67, 67)",
      "toolbar_text": "rgba(255, 255, 255, 0.7)",
      "frame": "rgb(67, 67, 67)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgba(255, 145, 0, 0.58)",
      "toolbar_field_text": "rgb(0, 0, 0)",
      "tab_line": "rgb(255, 145, 0)",
      "popup": "rgba(255, 145, 0, 0.58)",
      "popup_text": "rgb(0, 0, 0)",
      "icons": "rgb(255, 145, 0)",
      "popup_border": "rgb(255, 145, 0)",
      "tab_selected": "rgba(255, 145, 0, 0.58)",
      "tab_text": "rgb(255, 255, 255)",
      "tab_loading": "rgb(255, 145, 0)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{6508036a-1f52-4560-9d0c-fd1979b5c391}"
    }
  }
}