Examine source code of spongious bone

{
  "theme": {
    "images": {
      "theme_frame": "Bone_Header.jpg"
    },
    "colors": {
      "frame": "#e63d00",
      "tab_background_text": "#ff4d00"
    }
  },
  "version": "2.0",
  "name": "spongious bone",
  "manifest_version": 2,
  "description": "Spongious bone structure"
}