Examine source code of jestulator

{
  "theme": {
    "images": {
      "theme_frame": "firefoxrainbowfrac.jpg"
    },
    "colors": {
      "frame": "#417deb",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "jestulator",
  "manifest_version": 2,
  "description": "A vivid, psychedelic abstract mix of orange, blue, pink, purple, red and other rainbow tones. Fun and colorful."
}