Examine source code of Death metal

{
  "theme": {
    "images": {
      "theme_frame": "deahsdk.jpg"
    },
    "colors": {
      "frame": "#000000",
      "tab_background_text": "#f70a0a"
    }
  },
  "version": "2.0",
  "name": "Death metal",
  "manifest_version": 2,
  "description": "Indonesia Death metal"
}