Examine source code of Gillian Anderson 1-edit

{
  "theme": {
    "images": {
      "theme_frame": "FooterfirefoxGA1-2.jpg"
    },
    "colors": {
      "frame": "#694d3c",
      "tab_background_text": "#693c42"
    }
  },
  "version": "2.0",
  "name": "Gillian Anderson 1-edit",
  "manifest_version": 2,
  "description": "An edited version of the first one.\nLeft photo moved a bit to the right and another text/ accent colour."
}