Examine source code of CDUB's Frosty Theme

{
  "name": "CDUB's Frosty Theme",
  "manifest_version": 2,
  "version": "3.0",
  "theme": {
    "images": {
      "theme_frame": "Untitled presentation.svg"
    },
    "colors": {
      "frame": "rgba(88, 100, 128, 1)",
      "tab_background_text": "rgba(167, 155, 127, 1)",
      "toolbar": "rgba(129, 161, 193, 1)",
      "bookmark_text": "rgba(167, 155, 127, 1)",
      "toolbar_field": "rgba(92, 124, 168, 1)",
      "toolbar_field_text": "rgba(252, 252, 252, 1)",
      "tab_line": "rgba(145, 143, 181, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{183c354b-8f0f-4e93-bf4b-1b9c49f16b5c}"
    }
  }
}