Examine source code of sailor-moons

{
  "theme": {
    "images": {
      "theme_frame": "sailormoo.jpg"
    },
    "colors": {
      "frame": "#d479a5",
      "tab_background_text": "#fffcfc"
    }
  },
  "version": "2.0",
  "name": "sailor-moons",
  "manifest_version": 2,
  "description": "sailor moons"
}