Examine source code of Simple Dark Theme

{
  "manifest_version": 2,
  "version": "1.2",
  "name": "Simple Dark Theme",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "toolbar": "rgb(43, 43, 47)",
      "toolbar_text": "rgb(231, 231, 234)",
      "frame": "rgb(26, 26, 26)",
      "tab_background_text": "rgb(231, 231, 234)",
      "toolbar_field": "rgb(31, 31, 34)",
      "toolbar_field_text": "rgb(231, 231, 234)",
      "tab_line": "rgb(35, 35, 36)",
      "popup": "rgb(26, 26, 26)",
      "popup_text": "rgb(231, 231, 234)",
      "button_background_active": "rgb(43, 43, 233)",
      "button_background_hover": "rgb(31, 31, 34)",
      "icons_attention": "rgb(250, 189, 47)",
      "sidebar_border": "rgb(26, 26, 26)",
      "sidebar": "rgb(26, 26, 26)",
      "tab_loading": "rgb(43, 43, 233)",
      "toolbar_field_border_focus": "rgb(26, 26, 26)",
      "toolbar_field_focus": "rgb(31, 31, 34)",
      "toolbar_field_text_focus": "rgb(231, 231, 234)"
    }
  }
}