Examine source code of bl33su

{
  "theme": {
    "images": {
      "theme_frame": "bl33su.jpg"
    },
    "colors": {
      "frame": "#ebe2e2",
      "tab_background_text": "#34343d"
    }
  },
  "version": "2.0",
  "name": "bl33su",
  "manifest_version": 2,
  "description": "bl33su"
}