Examine source code of F3 Fallout 3

{
  "theme": {
    "images": {
      "theme_frame": "F3Header.Damn.jpg"
    },
    "colors": {
      "frame": "#b3b3b3",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "F3 Fallout 3",
  "manifest_version": 2,
  "description": "First Version \nHeader have some bugs and it's maybe only for 1680 x ???? / Wildscreen or more\n\nSo have fun when u see it xd hope there is nothing wrong."
}