Examine source code of Orange Tribute

{
  "theme": {
    "images": {
      "theme_frame": "OrangeFirefoxheader.jpg"
    },
    "colors": {
      "frame": "#a3a3a3",
      "tab_background_text": "#ff6a00"
    }
  },
  "version": "2.0",
  "name": "Orange Tribute",
  "manifest_version": 2,
  "description": "Orange Tribute Based on the 2009 Dual Terror head."
}