Examine source code of Glowing Maple Leaf

{
  "name": "Glowing Maple Leaf",
  "manifest_version": 2,
  "version": "5.0",
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "rgba(71, 34, 34, 1)",
      "tab_background_text": "rgba(255, 233, 89, 1)",
      "toolbar": "rgba(71, 33, 33, 0)",
      "bookmark_text": "rgba(255, 233, 89, 1)",
      "toolbar_field": "rgba(71, 33, 33, 0.09)",
      "toolbar_field_text": "rgba(255, 233, 89, 1)",
      "tab_line": "rgba(255, 222, 59, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{514348a2-aac8-42ed-86fa-1d605907fd19}"
    }
  }
}