Examine source code of Common Struggles Green

{
  "theme": {
    "images": {
      "theme_frame": "header.jpg"
    },
    "colors": {
      "frame": "#212915",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Common Struggles Green",
  "manifest_version": 2,
  "description": "A variation on the <a href=\"https://outgoing.prod.mozaws.net/v1/623b289c0a39e549e2588240f7dc6c13676e6cf524d5baa09b59f104f166e4da/http%3A//commonstruggles.com\" rel=\"nofollow\">commonstruggles.com</a> color scheme."
}