Examine source code of Volleys-Salwy

{
  "theme": {
    "images": {
      "theme_frame": "motywfireworks.jpg"
    },
    "colors": {
      "frame": "#ded6c7",
      "tab_background_text": "#dbd7ba"
    }
  },
  "version": "2.0",
  "name": "Volleys-Salwy",
  "manifest_version": 2,
  "description": "colorful fireworks"
}