Examine source code of Violgreen

{
  "manifest_version": 2,
  "version": "1.1",
  "name": "Violgreen",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-026-829b05416f823e170310e7c826ad1bec.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(14, 0, 19)",
      "toolbar_text": "rgb(158, 255, 0)",
      "frame": "rgb(20, 0, 28)",
      "tab_background_text": "rgb(156, 255, 0)",
      "toolbar_field": "rgb(14, 0, 19)",
      "toolbar_field_text": "rgb(158, 255, 0)",
      "tab_line": "rgb(184, 0, 255)",
      "popup": "rgb(14, 0, 19)",
      "popup_text": "rgb(158, 255, 0)",
      "frame_inactive": "rgb(17, 28, 0)",
      "icons_attention": "rgb(184, 0, 255)",
      "icons": "rgb(158, 255, 0)",
      "popup_border": "rgb(184, 0, 255)",
      "sidebar": "rgb(20, 0, 33)",
      "tab_loading": "rgb(158, 255, 0)",
      "tab_selected": "rgb(14, 0, 19)",
      "tab_text": "rgb(156, 255, 0)",
      "toolbar_bottom_separator": "rgb(75, 0, 104)",
      "toolbar_field_border": "rgb(125, 0, 172)",
      "toolbar_top_separator": "rgb(156, 255, 0)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{16659001-4f9a-403a-8abc-9b16d9425416}"
    }
  }
}