Examine source code of Morracan_Fun

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#fcfcfc",
      "tab_background_text": "#2e2e2e"
    }
  },
  "version": "2.0",
  "name": "Morracan_Fun",
  "manifest_version": 2,
  "description": "I did not Design this background. I just loved the art and Wanted to make it a theme for my firefox."
}