Examine source code of blue grey cirlces

{
  "theme": {
    "images": {
      "theme_frame": "persone-try-header01copy.jpg"
    },
    "colors": {
      "frame": "#425556",
      "tab_background_text": "#22e6e8"
    }
  },
  "version": "2.0",
  "name": "blue grey cirlces",
  "manifest_version": 2,
  "description": "3k px wide. some circles and lines in my favorites gradient. have fun."
}