Examine source code of Personal Spectre

{
  "theme": {
    "images": {
      "theme_frame": "PersonalSpectre.jpg"
    },
    "colors": {
      "frame": "#f2efef",
      "tab_background_text": "#fafafa"
    }
  },
  "version": "2.0",
  "name": "Personal Spectre",
  "manifest_version": 2,
  "description": "My living room is full of these every night"
}