Examine source code of Mango

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Mango",
  "icons": {
    "32": "images/icon.svg"
  },
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-027-1049af643fc55b4ffd4a8575444547c5.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(255, 211, 130)",
      "toolbar_text": "rgb(0, 0, 0)",
      "frame": "rgb(237, 182, 124)",
      "tab_background_text": "rgb(12, 12, 13)",
      "toolbar_field": "rgb(255, 211, 130)",
      "toolbar_field_text": "rgb(0, 0, 0)",
      "tab_line": "rgb(0, 0, 0)",
      "popup": "rgb(232, 226, 136)",
      "popup_text": "rgb(56, 22, 15)",
      "icons": "rgb(0, 0, 0)",
      "ntp_background": "rgb(255, 211, 130)",
      "ntp_text": "rgb(0, 0, 0)",
      "tab_loading": "rgb(0, 0, 0)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{edd7b674-1c46-4d72-b25a-2f0a015985a5}"
    }
  }
}