Examine source code of Sparks 2

{
  "theme": {
    "images": {
      "theme_frame": "Sparks2copy.jpg"
    },
    "colors": {
      "frame": "#f3ffb5",
      "tab_background_text": "#f5f7b9"
    }
  },
  "version": "2.0",
  "name": "Sparks 2",
  "manifest_version": 2,
  "description": "Hopefully improved to work better on XP"
}