Examine source code of Barn Collage Full Toolbar

{
  "name": "Barn Collage Full Toolbar",
  "manifest_version": 2,
  "version": "5.0",
  "theme": {
    "images": {
      "theme_frame": "8Custom.jpg"
    },
    "colors": {
      "frame": "rgba(173, 157, 166, 1)",
      "tab_background_text": "rgba(255, 255, 255, 1)",
      "toolbar": "rgba(173, 155, 165, 0)",
      "bookmark_text": "rgba(255, 255, 255, 1)",
      "toolbar_field": "rgba(173, 155, 165, 0.05)",
      "toolbar_field_text": "rgba(255, 255, 255, 1)",
      "tab_line": "rgba(255, 255, 255, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{9e11cb60-1e30-4548-884d-f4ff61a2a5b3}"
    }
  }
}