Examine source code of Graph by M♥Donna

{
  "name": "Graph by M♥Donna",
  "manifest_version": 2,
  "version": "3.0",
  "theme": {
    "images": {
      "theme_frame": "Graph.jpg"
    },
    "colors": {
      "frame": "rgba(43, 29, 75, 1)",
      "tab_background_text": "rgba(220, 184, 255, 1)",
      "toolbar": "rgba(45, 29, 77, 0)",
      "bookmark_text": "rgba(220, 184, 255, 1)",
      "toolbar_field": "rgba(45, 29, 77, 0.08)",
      "toolbar_field_text": "rgba(255, 255, 255, 1)",
      "tab_line": "rgba(255, 255, 255, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{0d3e5711-6571-4168-82b1-ccc11b1be6d5}"
    }
  }
}