Examine source code of Dark VS Code GitHub Theme

{
  "name": "Dark VS Code GitHub Theme",
  "manifest_version": 2,
  "version": "1.2",
  "theme": {
    "images": {
      "theme_frame": "transparent.png"
    },
    "colors": {
      "frame": "rgba(31, 36, 40, 1)",
      "tab_background_text": "rgba(149, 157, 165, 1)",
      "toolbar": "rgba(36, 41, 46, 1)",
      "bookmark_text": "rgba(225, 228, 232, 1)",
      "toolbar_field": "rgba(47, 54, 61, 1)",
      "toolbar_field_text": "rgba(145, 153, 161, 1)",
      "tab_line": "rgba(249, 130, 108, 1)"
    }
  }
}