Examine source code of Dark Purple Theme

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Dark purple theme",
  "theme": {
    "properties": {
      "color_scheme": "dark"
    },
    "colors": {
      "toolbar": "#2c2c3b",
      "sidebar": "#2c2c3b",
      "toolbar_text": "#D0D0D9",
      "ntp_text": "#D0D0D9",
      "sidebar_text": "#D0D0D9",
      "bookmark_text": "#D0D0D9",
      "tab_text": "#D0D0D9",
      "popup_text": "#D0D0D9",
      "frame": "#1d1d26",
      "ntp_background": "#1d1d26",
      "tab_background_text": "#877399",
      "tab_line": "#9649CC",
      "tab_loading": "#713a91",
      "toolbar_field": "#3a384d",
      "toolbar_field_text": "#D0D0D9",
      "popup": "#2c2c3b",
      "popup_highlight": "#713a91",
      "popup_highlight_text": "#D0D0D9",
      "tab_selected": "#363647",
      "toolbar_field_border_focus": "#814F9E",
      "toolbar_field_highlight": "#214283",
      "button_background_active": "#713a91",
      "button_background_hover": "#713a91",
      "icons_attention": "#713a91",
      "icons": "#a4a1b3",
      "sidebar_highlight": "#713a91"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{739694c0-6e13-4085-b44f-665c9e186213}"
    }
  }
}