Examine source code of Atelier

{
  "name": "Atelier",
  "manifest_version": 2,
  "version": "2.0",
  "theme": {
    "images": {
      "theme_frame": "main_bg_pc.jpg"
    },
    "colors": {
      "frame": "rgba(0, 0, 0, 1)",
      "tab_background_text": "rgba(255, 255, 255, 0.8)",
      "toolbar": "rgba(0, 0, 0, 0.64)",
      "bookmark_text": "rgba(255, 255, 255, 1)",
      "toolbar_field": "rgba(232, 232, 232, 0.88)",
      "toolbar_field_text": "rgba(0, 0, 0, 1)",
      "tab_line": "rgba(117, 234, 255, 0.82)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{0a0158a4-ae66-4cdf-b65c-dc7b5dddae9b}"
    }
  }
}