Examine source code of Parchment

{
  "name": "Parchment",
  "manifest_version": 2,
  "version": "3.0",
  "theme": {
    "images": {
      "theme_frame": "Parchment-Background-HQ-Wallpaper-14483.jpg"
    },
    "colors": {
      "frame": "rgba(235, 235, 235, 1)",
      "tab_background_text": "rgba(112, 78, 0, 1)",
      "toolbar": "rgba(255, 213, 161, 0.34)",
      "bookmark_text": "rgba(238, 255, 0, 1)",
      "toolbar_field": "rgba(143, 83, 0, 0.32)",
      "toolbar_field_text": "rgba(112, 78, 0, 1)",
      "tab_line": "rgba(112, 78, 0, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{53749eda-1475-4e79-858e-7b6afcbf9ca0}"
    }
  }
}