Examine source code of Structure

{
  "name": "Structure",
  "manifest_version": 2,
  "version": "2.0",
  "theme": {
    "images": {
      "theme_frame": "4_Structure.jpg"
    },
    "colors": {
      "frame": "rgba(136, 144, 163, 1)",
      "tab_background_text": "rgba(255, 0, 200, 1)",
      "toolbar": "rgba(43, 204, 25, 0.6)",
      "bookmark_text": "rgba(17, 18, 18, 1)",
      "toolbar_field": "rgba(250, 247, 247, 0.4)",
      "toolbar_field_text": "rgba(12, 13, 13, 1)"
    }
  }
}