Examine source code of Many Blues

{
  "name": "Many Blues",
  "manifest_version": 2,
  "version": "4.0",
  "theme": {
    "images": {
      "theme_frame": "ManyCustom.jpg"
    },
    "colors": {
      "frame": "rgba(139, 184, 186, 1)",
      "tab_background_text": "rgba(255, 255, 255, 1)",
      "toolbar": "rgba(142, 186, 189, 0)",
      "bookmark_text": "rgba(255, 255, 255, 1)",
      "toolbar_field": "rgba(142, 186, 189, 0.06)",
      "toolbar_field_text": "rgba(255, 255, 255, 1)",
      "tab_line": "rgba(255, 255, 255, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{5a066fdd-d13e-4170-a88d-3bfac67e8606}"
    }
  }
}