Examine source code of WH 40k

{
  "theme": {
    "images": {
      "theme_frame": "header.jpg"
    },
    "colors": {
      "frame": "#13260a",
      "tab_background_text": "#1c6e13"
    }
  },
  "version": "2.0",
  "name": "WH 40k",
  "manifest_version": 2,
  "description": "Warhammer 40k. Warhammer 40.000 is registered trademark of Games Workshop."
}