Examine source code of Spicy Blue

{
  "name": "Spicy Blue",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "minecraft-snowfall-png-1.png"
    },
    "colors": {
      "frame": "rgba(49, 102, 118, 1)",
      "tab_background_text": "rgba(131, 224, 250, 1)",
      "toolbar": "rgba(74, 82, 84, 1)",
      "bookmark_text": "rgba(35, 173, 207, 1)",
      "toolbar_field": "rgba(48, 57, 61, 1)",
      "toolbar_field_text": "rgba(50, 174, 206, 1)"
    }
  }
}