Examine source code of Grafiti Red

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "redfiti",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png",
        "images/1.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "left center",
        "right bottom"
      ],
      "additional_backgrounds_tiling": [
        "no-repeat",
        "no-repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(225, 234, 239, 0)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(0, 0, 0)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgb(255, 255, 255)",
      "toolbar_field_text": "rgb(0, 0, 0)",
      "tab_line": "rgb(231, 45, 20)",
      "popup": "rgb(0, 0, 0)",
      "popup_text": "rgb(255, 255, 255)",
      "button_background_active": "rgb(231, 45, 20)",
      "button_background_hover": "rgb(231, 45, 20)",
      "frame_inactive": "rgba(73, 163, 242, 0)",
      "icons_attention": "rgb(231, 45, 20)",
      "icons": "rgb(255, 255, 255)",
      "ntp_background": "rgb(255, 255, 255)",
      "ntp_text": "rgb(255, 255, 255)",
      "popup_border": "rgb(231, 45, 20)",
      "popup_highlight": "rgb(231, 45, 20)",
      "tab_loading": "rgb(231, 45, 20)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{3bf6dc8b-60bc-4bce-b3e3-ec2c9ec39015}"
    }
  }
}