Examine source code of EGBK FFC

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "EGBK FFC",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "center bottom"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(59, 59, 66, 0.13)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(0, 0, 0)",
      "tab_background_text": "rgb(192, 197, 200)",
      "toolbar_field": "rgba(88, 88, 96, 0.57)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgba(4, 0, 4, 0)",
      "popup": "rgba(28, 4, 56, 0.57)",
      "popup_text": "rgb(255, 255, 255)",
      "tab_selected": "rgba(0, 0, 0, 0.57)",
      "toolbar_top_separator": "rgba(106, 27, 198, 0.57)",
      "tab_loading": "rgba(4, 0, 4, 0)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{01d5d957-67c6-4a79-adec-65c518501c29}"
    }
  }
}