Examine source code of Test Cloud

{
  "theme": {
    "images": {
      "theme_frame": "ff_theme_test.png"
    },
    "colors": {
      "frame": "#8a0000",
      "tab_background_text": "#262626"
    }
  },
  "version": "2.0",
  "name": "Test Cloud",
  "manifest_version": 2,
  "description": "Test Cloud"
}