Examine source code of Dark Skulls Theme

{
  "name": "Dark Skull Theme",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "halloween-patterns-church_244373.jpg.png"
    },
    "colors": {
      "frame": "rgba(28, 28, 28, 1)",
      "tab_background_text": "rgba(232, 232, 232, 1)",
      "toolbar": "rgba(31, 31, 31, 1)",
      "bookmark_text": "rgba(227, 227, 227, 1)",
      "toolbar_field": "rgba(120, 120, 120, 1)",
      "toolbar_field_text": "rgba(240, 240, 240, 1)"
    }
  }
}