Examine source code of Spring Fun

{
  "name": "Red Walvet Theme",
  "manifest_version": 2,
  "version": "2.0",
  "theme": {
    "images": {
      "theme_frame": "a.jpg"
    },
    "colors": {
      "frame": "rgba(94, 27, 25, 1)",
      "tab_background_text": "rgba(195, 200, 222, 1)",
      "toolbar": "rgba(131, 144, 181, 1)",
      "bookmark_text": "rgba(26, 24, 24, 1)",
      "toolbar_field": "rgba(84, 44, 43, 0.34)",
      "toolbar_field_text": "rgba(43, 32, 32, 1)"
    }
  }
}