Examine source code of Cracked Rainbows

{
  "theme": {
    "images": {
      "theme_frame": "pastelrainbow_hdr.jpg"
    },
    "colors": {
      "frame": "#1c001f",
      "tab_background_text": "#1c001f"
    }
  },
  "version": "2.0",
  "name": "Cracked Rainbows",
  "manifest_version": 2,
  "description": "Pastel rainbows on cracked paint."
}