Examine source code of NIN Moon

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#365213",
      "tab_background_text": "#cafc00"
    }
  },
  "version": "2.0",
  "name": "NIN Moon",
  "manifest_version": 2,
  "description": "I love NIN and the moon so I created this ;)"
}