Examine source code of floral concrete

{
  "theme": {
    "images": {
      "theme_frame": "floralconcrete_head.jpg"
    },
    "colors": {
      "frame": "#a6a6a6",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "floral concrete",
  "manifest_version": 2,
  "description": "Simple concrete texture with indication of flowers"
}