Examine source code of fishy firefox

{
  "theme": {
    "images": {
      "theme_frame": "fishy_fishy.JPG"
    },
    "colors": {
      "frame": "#57d2e0",
      "tab_background_text": "#57d2e0"
    }
  },
  "version": "2.0",
  "name": "fishy firefox",
  "manifest_version": 2,
  "description": "fishy firefox"
}