Examine source code of Chrome Dark 2

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Chrome Dark 2",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-000-5672c42860d5b06e1058dc477397f3ef.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(27, 27, 31)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(13, 15, 20)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgb(13, 15, 20)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgb(13, 15, 20)",
      "popup": "rgb(41, 42, 45)",
      "popup_text": "rgb(255, 255, 255)",
      "button_background_active": "rgb(80, 82, 85)",
      "button_background_hover": "rgb(52, 54, 58)",
      "icons": "rgb(170, 170, 175)",
      "ntp_background": "rgb(0, 0, 0)",
      "popup_border": "rgb(13, 15, 20)",
      "popup_highlight": "rgb(52, 54, 58)",
      "tab_selected": "rgb(48, 48, 52)",
      "toolbar_bottom_separator": "rgb(27, 27, 31)",
      "toolbar_field_highlight_text": "rgb(13, 15, 20)",
      "toolbar_field_highlight": "rgb(168, 199, 250)",
      "toolbar_top_separator": "rgb(27, 27, 31)",
      "tab_loading": "rgb(13, 15, 20)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{cf7c589b-0091-4138-9658-e68c3f735f6a}"
    }
  }
}