Examine source code of Rothbury Header

{
  "theme": {
    "images": {
      "theme_frame": "RothburyHeader.png"
    },
    "colors": {
      "frame": "#3ebccf",
      "tab_background_text": "#e1eb57"
    }
  },
  "version": "2.0",
  "name": "Rothbury Header",
  "manifest_version": 2,
  "description": "rothbury logo and design"
}