Examine source code of EvShadow

{
  "theme": {
    "images": {
      "theme_frame": "Evpersona.jpg"
    },
    "colors": {
      "frame": "#999999",
      "tab_background_text": "#bababa"
    }
  },
  "version": "2.0",
  "name": "EvShadow",
  "manifest_version": 2,
  "description": "This is the 1st persona of <a href=\"https://outgoing.prod.mozaws.net/v1/b19774b56990d4fbecb794bdab9e9f4b95cf9477e23ab997554ce2be41cc2955/http%3A//EvShadow.rg3.net\" rel=\"nofollow\">EvShadow.rg3.net</a> enjoy it!"
}