Examine source code of wintergreen pattern

{
  "theme": {
    "images": {
      "theme_frame": "winterypattern.jpg"
    },
    "colors": {
      "frame": "#1e960c",
      "tab_background_text": "#3dbcf2"
    }
  },
  "version": "2.0",
  "name": "wintergreen pattern",
  "manifest_version": 2,
  "description": "winter like pattern"
}