Examine source code of soft rainbow animation

{
  "theme": {
    "images": {
      "theme_frame": "top.png"
    },
    "colors": {
      "frame": "#ffffff",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "soft rainbow animation",
  "manifest_version": 2,
  "description": "A rainbowmade out of light colors. Not only that butsits an animation. But the variety of colors doesn't even make it hard to read th text"
}