Examine source code of green with circles

{
  "theme": {
    "images": {
      "theme_frame": "header3.png"
    },
    "colors": {
      "frame": "#28dff0",
      "tab_background_text": "#3111eb"
    }
  },
  "version": "2.0",
  "name": "green with circles",
  "manifest_version": 2,
  "description": "Bright green with dark green circles"
}