Examine source code of Foxkeh Cloud Fixed

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#0FD2FE",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Foxkeh Cloud Fixed",
  "manifest_version": 2,
  "description": "Added background color to the original Foxkeh Cloud theme\n<a href=\"https://addons.mozilla.org/en-US/firefox/addon/foxkeh-cloud/\" rel=\"nofollow\">https://addons.mozilla.org/en-US/firefox/addon/foxkeh-cloud/</a>\nI will remove this when original author adds background color."
}