Examine source code of Shadow Sunset

{
  "theme": {
    "images": {
      "theme_frame": "Header1.jpg"
    },
    "colors": {
      "frame": "#403b3b",
      "tab_background_text": "#f2eaea"
    }
  },
  "version": "2.0",
  "name": "Shadow Sunset",
  "manifest_version": 2,
  "description": "A simple persona with a sunset blending in to obscurity towards the left."
}