Examine source code of Red Tangle

{
  "theme": {
    "images": {
      "theme_frame": "Persona_Tangle_Header-01.jpg"
    },
    "colors": {
      "frame": "#6e0000",
      "tab_background_text": "#6e0000"
    }
  },
  "version": "2.0",
  "name": "Red Tangle",
  "manifest_version": 2,
  "description": "Created in Adobe Illustrator cs3"
}