Examine source code of my desk 2

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#3c424a",
      "tab_background_text": "#d9e0e9"
    }
  },
  "version": "2.0",
  "name": "my desk 2",
  "manifest_version": 2,
  "description": "Designers Workbench"
}