Examine source code of fading blue grey

{
  "theme": {
    "images": {
      "theme_frame": "workin.jpg"
    },
    "colors": {
      "frame": "#e8dada",
      "tab_background_text": "#f5eded"
    }
  },
  "version": "2.0",
  "name": "fading blue grey",
  "manifest_version": 2,
  "description": "just made this for fun."
}