Examine source code of Summer Night

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Summer Night",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top"
      ],
      "additional_backgrounds_tiling": [
        "no-repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(109, 54, 86)",
      "toolbar_text": "rgb(229, 242, 230)",
      "frame": "rgb(0, 0, 0)",
      "tab_background_text": "rgb(237, 231, 88)",
      "toolbar_field": "rgb(0, 0, 0)",
      "toolbar_field_text": "rgb(206, 210, 36)",
      "tab_line": "rgb(248, 112, 140)",
      "popup": "rgb(245, 226, 185)",
      "popup_text": "rgb(10, 19, 226)",
      "icons": "rgb(236, 240, 31)",
      "ntp_background": "rgba(59, 9, 47, 0.25)",
      "sidebar_border": "rgb(245, 226, 185)",
      "sidebar_text": "rgb(245, 226, 185)",
      "toolbar_top_separator": "rgba(212, 138, 112, 0.25)",
      "tab_loading": "rgb(248, 112, 140)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{9d22b5a3-d121-4066-9aee-387e29da7bd7}"
    }
  }
}