Examine source code of Blue Slated

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Blue Slated",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "toolbar": "rgb(26, 53, 91)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(9, 26, 50)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgb(29, 54, 77)",
      "toolbar_field_text": "rgb(204, 204, 204)",
      "tab_line": "rgba(255, 255, 255, 0)",
      "popup": "rgb(11, 22, 33)",
      "popup_text": "rgb(204, 204, 204)",
      "ntp_background": "rgb(4, 8, 13)",
      "popup_border": "rgba(11, 18, 25, 0)",
      "popup_highlight": "rgba(11, 18, 25, 0)",
      "tab_loading": "rgba(255, 255, 255, 0)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{c6e09dcb-8586-44bb-a480-590221625ba7}"
    }
  }
}