Examine source code of Bluedeep

{
  "theme": {
    "images": {
      "theme_frame": "hbhbhb.jpg"
    },
    "colors": {
      "frame": "#0e0e0f",
      "tab_background_text": "#f2f3fa"
    }
  },
  "version": "2.0",
  "name": "Bluedeep",
  "manifest_version": 2
}