Examine source code of Wicked Valentine

{
  "theme": {
    "images": {
      "theme_frame": "Wicked-Valentine-1A.png"
    },
    "colors": {
      "frame": "#b0a2a2",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Wicked Valentine",
  "manifest_version": 2,
  "description": "A Valentine for the horror fan"
}