Examine source code of Gothic Dark

{
  "name": "Gothic Dark",
  "manifest_version": 2,
  "version": "4.0",
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "rgba(38, 21, 31, 1)",
      "tab_background_text": "rgba(245, 215, 235, 1)",
      "toolbar": "rgba(41, 23, 33, 0)",
      "bookmark_text": "rgba(247, 220, 238, 1)",
      "toolbar_field": "rgba(41, 23, 33, 0.07)",
      "toolbar_field_text": "rgba(247, 220, 238, 1)",
      "tab_line": "rgba(247, 220, 238, 1)"
    }
  }
}