Examine source code of Maxforums.org basic

{
  "theme": {
    "images": {
      "theme_frame": "Persona_Header_maxforums.jpg"
    },
    "colors": {
      "frame": "rgba(229,230,232,1)",
      "tab_background_text": "#000"
    }
  },
  "version": "2.0",
  "name": "Maxforums.org basic",
  "manifest_version": 2,
  "description": "A very basic <a href=\"https://outgoing.prod.mozaws.net/v1/fe7afb1c5d1c3c0835876eb11823bf71c84cd975b371923bbaefbc27cb46c7ac/http%3A//Maxforums.org\" rel=\"nofollow\">Maxforums.org</a> colour scheme."
}