Examine source code of Green themes

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Green grass",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-016-af8c49de75012ca2c007f953ff2e4499.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(251, 255, 246)",
      "toolbar_text": "rgb(31, 139, 6)",
      "frame": "rgb(39, 146, 10)",
      "tab_background_text": "rgb(219, 234, 56)",
      "toolbar_field": "rgb(236, 248, 213)",
      "toolbar_field_text": "rgb(30, 104, 22)",
      "tab_line": "rgb(37, 164, 35)",
      "popup": "rgb(75, 180, 26)",
      "popup_text": "rgb(235, 255, 235)",
      "tab_loading": "rgb(37, 164, 35)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{5165e4ed-caa0-4bad-8514-278add101f39}"
    }
  }
}