Examine source code of Complementary Colors

{
  "theme": {
    "images": {
      "theme_frame": "FirefoxPersona-BLZ-ComplementaryColors-header.jpg"
    },
    "colors": {
      "frame": "#6959c6",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Complementary Colors",
  "manifest_version": 2,
  "description": "A dandelion was growing among our purple phlox, but I really liked the colors. \n(spring, springtime, flowers, Easter, colorful, purple, yellow, macro, closeup)\nTo rate or comment, login here:\n<a href=\"https://addons.mozilla.org/en-US/firefox/addon/complementary-colors/#id=312343\" rel=\"nofollow\">https://addons.mozilla.org/en-US/firefox/addon/complementary-colors/#id=312343</a> \nSee all my personas here:\n<a href=\"https://addons.mozilla.org/en-US/firefox/collections/BrianZ/personas/\" rel=\"nofollow\">https://addons.mozilla.org/en-US/firefox/collections/BrianZ/personas/</a> \n(c) 2011 BrianZ  All Rights Reserved"
}