Examine source code of Triangle Cubes by MaDonna

{
  "name": "Triangle Cubes by MaDonna",
  "manifest_version": 2,
  "version": "6.0",
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "rgba(3, 3, 3, 1)",
      "tab_background_text": "rgba(255, 255, 255, 1)",
      "toolbar": "rgba(3, 3, 3, 0)",
      "bookmark_text": "rgba(227, 159, 227, 1)",
      "toolbar_field": "rgba(3, 3, 3, 0.05)",
      "toolbar_field_text": "rgba(255, 255, 255, 1)",
      "tab_line": "rgba(255, 255, 255, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{130b1810-e41d-4d65-9b87-ec07066299c4}"
    }
  }
}