Examine source code of Snow time

{
  "name": "zimna",
  "manifest_version": 2,
  "version": "2.0",
  "theme": {
    "images": {
      "theme_frame": "zimna.jpg"
    },
    "colors": {
      "toolbar": "rgba(245, 249, 255, 0.21)",
      "toolbar_field": "rgba(220, 226, 247, 0.32)",
      "toolbar_field_text": "rgba(3, 18, 66, 1)",
      "frame": "rgba(255, 255, 255, 1)",
      "tab_background_text": "rgba(3, 18, 66, 1)",
      "bookmark_text": "rgba(3, 18, 66, 1)"
    }
  }
}