Examine source code of Simple-Green-Gacia

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Simple Green",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-023-f741aad3989b46322a7840a425068429.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(1, 88, 1)",
      "toolbar_text": "rgb(222, 225, 234)",
      "frame": "rgb(4, 88, 1)",
      "tab_background_text": "rgb(82, 200, 82)",
      "toolbar_field": "rgb(2, 72, 2)",
      "toolbar_field_text": "rgb(231, 242, 229)",
      "tab_line": "rgb(20, 194, 20)",
      "popup": "rgb(31, 106, 31)",
      "popup_text": "rgb(222, 225, 234)",
      "icons_attention": "rgb(246, 246, 246)",
      "icons": "rgb(242, 242, 237)",
      "ntp_text": "rgb(241, 241, 241)",
      "tab_loading": "rgb(20, 194, 20)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{6dff0d9e-93fa-432e-93c6-9505c6e49901}"
    }
  }
}