Examine source code of oxygen5

{
  "theme": {
    "images": {
      "theme_frame": "FirefoxOxygenH05.jpg"
    },
    "colors": {
      "frame": "#0af5f5",
      "tab_background_text": "#040c7d"
    }
  },
  "version": "2.0",
  "name": "oxygen5",
  "manifest_version": 2,
  "description": "oxygen bubbles"
}