Examine source code of Energetic Green

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Energetic Green",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-002-609370e89a219e0548ac5ef6b4a7dd2e.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(0, 0, 0)",
      "toolbar_text": "rgb(67, 157, 183)",
      "frame": "rgb(31, 127, 46)",
      "tab_background_text": "rgb(40, 221, 218)",
      "toolbar_field": "rgb(0, 0, 0)",
      "toolbar_field_text": "rgb(14, 164, 255)",
      "tab_line": "rgb(8, 19, 227)",
      "popup": "rgb(0, 0, 0)",
      "popup_text": "rgb(14, 164, 255)",
      "tab_loading": "rgb(8, 19, 227)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{71b1493d-f852-4e16-b1b5-d0488d11e574}"
    }
  }
}