Examine source code of spidery threads

{
  "theme": {
    "images": {
      "theme_frame": "spiderythreads.jpg"
    },
    "colors": {
      "frame": "#331a1a",
      "tab_background_text": "#f20c0c"
    }
  },
  "version": "2.0",
  "name": "spidery threads",
  "manifest_version": 2,
  "description": "black abstract spider-like threads"
}