Examine source code of deepsea jelly

{
  "theme": {
    "images": {
      "theme_frame": "jelly.jpeg"
    },
    "colors": {
      "frame": "#0720bf",
      "tab_background_text": "#f5f0f0"
    }
  },
  "version": "2.0",
  "name": "deepsea jelly",
  "manifest_version": 2,
  "description": "jelly jellyfish deep sea ocean"
}