Examine source code of My warm winter

{
  "name": "Cold winter",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "betterOne.png"
    },
    "colors": {
      "frame": "rgba(242, 235, 220, 1)",
      "tab_background_text": "rgba(40, 61, 89, 1)",
      "toolbar": "rgba(167, 198, 233, 1)",
      "bookmark_text": "rgba(40, 61, 89, 1)",
      "toolbar_field": "rgba(242, 235, 220, 1)",
      "toolbar_field_text": "rgba(40, 61, 89, 1)"
    }
  }
}