Examine source code of Teal basic

{
  "theme": {
    "images": {
      "theme_frame": "style.png"
    },
    "colors": {
      "frame": "#1b5587",
      "tab_background_text": "#09166e"
    }
  },
  "version": "2.0",
  "name": "Teal basic",
  "manifest_version": 2,
  "description": "-"
}