Examine source code of Mandalorian Skull

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#c0c0c0",
      "tab_background_text": "#464646"
    }
  },
  "version": "2.0",
  "name": "Mandalorian Skull",
  "manifest_version": 2,
  "description": "Dark background texture with a mandalorian skull"
}