Examine source code of Alieologic dig site

{
  "theme": {
    "images": {
      "theme_frame": "Alieologic_digsite_-header_image.png"
    },
    "colors": {
      "frame": "#fce8ee",
      "tab_background_text": "#f5fffb"
    }
  },
  "version": "2.0",
  "name": "Alieologic dig site",
  "manifest_version": 2
}