Examine source code of Scrapmat yellow

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#4f4c49",
      "tab_background_text": "#edb863"
    }
  },
  "version": "2.0",
  "name": "Scrapmat yellow",
  "manifest_version": 2,
  "description": "Warm yellow background color used on some tumblr blog."
}