Examine source code of my wooorld

{
  "theme": {
    "images": {
      "theme_frame": "header_myworld.jpg"
    },
    "colors": {
      "frame": "#c91616",
      "tab_background_text": "#c91212"
    }
  },
  "version": "2.0",
  "name": "my wooorld",
  "manifest_version": 2,
  "description": "..."
}