Examine source code of Inside the fire

{
  "theme": {
    "images": {
      "theme_frame": "fox.jpg"
    },
    "colors": {
      "frame": "#5d5e57",
      "tab_background_text": "#5d5e57"
    }
  },
  "version": "2.0",
  "name": "Inside the fire",
  "manifest_version": 2,
  "description": "Abstract, fire, flame, dark, intense, red, black."
}