Examine source code of Dark Modern VS Code

{
  "name" : "Dark Modern",
  "manifest_version" : 2 ,
  "version" : "1.0",
  "theme": {
    "images": {
      "theme_frame": "transparent.png"
    },
    "colors": {
      "frame": "rgba(24, 24, 24, 1)",
      "tab_background_text": "rgba(204, 204, 204, 1)",
      "toolbar": "rgba(31, 31, 31, 1)",
      "bookmark_text": "rgba(204, 204, 204, 1)",
      "toolbar_field": "rgba(49, 49, 49, 1)",
      "toolbar_field_text": "rgba(204, 204, 204, 1)",
      "tab_line": "rgba(31, 31, 31, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{4b3edcb4-045e-4212-9c95-007af2e52806}"
    }
  }
}