Examine source code of jillians header

{
  "theme": {
    "images": {
      "theme_frame": "stuff.jpeg"
    },
    "colors": {
      "frame": "#a6a6a6",
      "tab_background_text": "#969696"
    }
  },
  "version": "2.0",
  "name": "jillians header",
  "manifest_version": 2,
  "description": "just my header :3"
}