Examine source code of Black Wood 2

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Black Wood 2",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "left center"
      ],
      "additional_backgrounds_tiling": [
        "repeat-x"
      ]
    },
    "colors": {
      "toolbar": "rgba(0, 0, 0, 0.25)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(68, 68, 68)",
      "tab_background_text": "rgb(206, 206, 206)",
      "toolbar_field": "rgba(255, 255, 255, 0.43)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgb(196, 196, 196)",
      "popup": "rgba(255, 255, 255, 0.5)",
      "popup_text": "rgb(55, 55, 55)",
      "icons": "rgb(159, 159, 159)",
      "ntp_background": "rgb(184, 184, 184)",
      "popup_border": "rgb(117, 117, 117)",
      "popup_highlight_text": "rgb(0, 0, 0)",
      "popup_highlight": "rgb(0, 0, 0)",
      "sidebar_border": "rgb(0, 0, 0)",
      "sidebar_highlight": "rgb(0, 0, 0)",
      "sidebar": "rgb(165, 165, 165)",
      "tab_selected": "rgba(0, 0, 0, 0.08)",
      "tab_text": "rgb(187, 187, 187)",
      "tab_loading": "rgb(196, 196, 196)"
    }
  }
}