Examine source code of Totoro Classic

{
  "theme": {
    "images": {
      "theme_frame": "totoro_top.png"
    },
    "colors": {
      "frame": "#ffffff",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "Totoro Classic",
  "manifest_version": 2,
  "description": "A classic Totoro's theme for your Firefox!\n\nnote: enable the StatusBar/Add-on bar on the bottom of Firefox to see Chu Totoro and Chibi Totoro :3\n(this feature will be removed in Firefox 29. To restore it check \"Classic Theme Restorer\" (this add-on will restore the bottom bar)"
}