Examine source code of Snowy Winter

{
  "name": "Snowy Winter",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "nature-lakes-trees-forest-sunlight-sunrise-reflection-water-winter-snow-seasons-woods-desktop schöner hintergrund lol.jpg"
    },
    "colors": {
      "frame": "rgba(255, 255, 255, 1)",
      "tab_background_text": "rgba(123, 150, 166, 1)",
      "bookmark_text": "rgba(25, 118, 179, 1)",
      "toolbar_field": "rgba(188, 223, 235, 1)",
      "toolbar_field_text": "rgba(76, 118, 143, 1)"
    }
  }
}