Examine source code of Old Paper 2 by MaDonna

{
  "name": "Old Paper 2 by MaDonna",
  "manifest_version": 2,
  "version": "3.0",
  "theme": {
    "images": {
      "theme_frame": "OldPaper2H.jpg"
    },
    "colors": {
      "frame": "rgba(155, 166, 199, 1)",
      "tab_background_text": "rgba(255, 255, 255, 1)",
      "toolbar": "rgba(157, 166, 201, 0)",
      "bookmark_text": "rgba(255, 255, 255, 1)",
      "toolbar_field": "rgba(157, 166, 201, 0.08)",
      "toolbar_field_text": "rgba(255, 255, 255, 1)",
      "tab_line": "rgba(255, 255, 255, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{e4df8bbd-a7ab-44a2-bd3d-0c8bb55bb3a2}"
    }
  }
}