Examine source code of fox energy

{
  "theme": {
    "images": {
      "theme_frame": "foxhd.jpg"
    },
    "colors": {
      "frame": "rgba(229,230,232,1)",
      "tab_background_text": "#f7fad0"
    }
  },
  "version": "2.0",
  "name": "fox energy",
  "manifest_version": 2,
  "description": "my third persona! called \"foxlight\",  dedicate to firefox:\nthe black area in the footer is for links !! \nhope you like it!!"
}