Examine source code of Mix Typo

{
  "name": "Mix Typo",
  "manifest_version": 2,
  "version": "3.0",
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "rgba(232, 233, 235, 0)",
      "tab_background_text": "rgba(255, 255, 255, 1)",
      "toolbar": "rgba(0, 0, 0, 0)",
      "bookmark_text": "rgba(255, 255, 255, 1)",
      "toolbar_field": "rgba(3, 3, 3, 0)",
      "toolbar_field_text": "rgba(255, 255, 255, 1)",
      "tab_line": "rgba(232, 227, 227, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{b8e2d6aa-23b7-4246-a8f9-7e042ee609f8}"
    }
  }
}