Examine source code of Blue mood

{
  "theme": {
    "images": {
      "theme_frame": "blue_stripes.jpg"
    },
    "colors": {
      "frame": "#ffffff",
      "tab_background_text": "#ffff99"
    }
  },
  "version": "2.0",
  "name": "Blue mood",
  "manifest_version": 2,
  "description": "Abstract stripes design. Available also in green and red."
}