Examine source code of fun visual

{
  "theme": {
    "images": {
      "theme_frame": "400_F_4291408_NL9C1jifkIqqEjt42EmLeBHSYxVrYPAm.jpg"
    },
    "colors": {
      "frame": "#666262",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "fun visual",
  "manifest_version": 2,
  "description": "this is a image so happy and pacific! =)"
}