Examine source code of Dark Green

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Dark Green",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-000-5672c42860d5b06e1058dc477397f3ef.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(54, 55, 55)",
      "toolbar_text": "rgb(211, 216, 219)",
      "frame": "rgb(63, 92, 92)",
      "tab_background_text": "rgb(140, 140, 140)",
      "toolbar_field": "rgb(69, 69, 68)",
      "toolbar_field_text": "rgb(255, 152, 0)",
      "tab_line": "rgb(255, 24, 0)",
      "popup": "rgb(27, 40, 45)",
      "popup_text": "rgb(140, 140, 140)",
      "button_background_active": "rgb(90, 91, 92)",
      "button_background_hover": "rgb(46, 91, 125)",
      "icons": "rgb(158, 160, 162)",
      "ntp_background": "rgb(69, 69, 68)",
      "ntp_text": "rgb(116, 116, 118)",
      "popup_highlight": "rgb(90, 91, 92)",
      "sidebar_highlight_text": "rgb(225, 80, 65)",
      "sidebar_text": "rgb(158, 160, 162)",
      "sidebar": "rgb(54, 55, 55)",
      "tab_text": "rgb(211, 216, 219)",
      "toolbar_field_border_focus": "rgb(255, 152, 0)",
      "toolbar_field_border": "rgb(114, 82, 18)",
      "toolbar_field_highlight_text": "rgb(235, 220, 176)",
      "toolbar_field_highlight": "rgb(116, 116, 118)",
      "toolbar_field_separator": "rgb(225, 80, 65)",
      "toolbar_top_separator": "rgb(116, 116, 118)",
      "tab_loading": "rgb(255, 24, 0)"
    }
  }
}