Examine source code of Boxer in snow

{
  "name": "Boxer in snow",
  "manifest_version": 2,
  "version": "2.0",
  "theme": {
    "images": {
      "theme_frame": "Boxer in snow.jpg"
    },
    "colors": {
      "toolbar": "rgba(0, 0, 0, 0.27)",
      "toolbar_field": "rgba(0, 0, 0, 0.57)",
      "toolbar_field_text": "rgba(255, 235, 235, 1)",
      "frame": "rgba(171, 231, 255, 0.38)",
      "tab_background_text": "rgba(0, 8, 71, 1)",
      "bookmark_text": "rgba(2, 2, 77, 1)"
    }
  }
}