Examine source code of Green Graph by MaDonna

{
  "name": "Green Graph by MaDonna",
  "manifest_version": 2,
  "version": "5.0",
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "rgba(2, 23, 7, 1)",
      "tab_background_text": "rgba(54, 255, 54, 1)",
      "toolbar": "rgba(2, 23, 7, 0)",
      "bookmark_text": "rgba(47, 252, 47, 1)",
      "toolbar_field": "rgba(2, 23, 7, 0.07)",
      "toolbar_field_text": "rgba(38, 252, 0, 1)",
      "tab_line": "rgba(38, 252, 0, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{3d8663af-0635-4ac8-93f9-8c6f9ac4a3e5}"
    }
  }
}