Examine source code of Purple Brights

{
  "theme": {
    "images": {
      "theme_frame": "PurpleBrights.jpg"
    },
    "colors": {
      "frame": "#ffffff",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Purple Brights",
  "manifest_version": 2,
  "description": "circles, bubbles, dots, magenta, hot pink, bright pink"
}