Add note about exporter

README.md

@@ -273,7 +273,7 @@ architecture model:
 | `generatr.site.externalTag`             | Software systems containing this tag will be considered external                                                                                                                                                                                                                                                                                 |                                |                                                      |
 | `generatr.site.nestGroups`              | Will show software systems in the left side navigator in collapsable groups                                                                                                                                                                                                                                                                      | `false`                        | `true`                                               |
 | `generatr.site.cdn`                     | Specifies the CDN base location for fetching NPM packages for browser runtime dependencies. Defaults to jsDelivr, but can be changed to e.g. an on-premise location.                                                                                                                                                                             | `https://cdn.jsdelivr.net/npm` | `https://cdn.my-company/npm`                         |
-| `generatr.site.theme`                   | Experimental: allows to force a light or dark theme or allows to switch between light and dark mode on the website with browser preference or menu item. Possible values are 'light', 'dark' or 'auto'.                                                                                                                                          | `light`                        | `auto`                                               |
+| `generatr.site.theme`                   | Experimental: allows to force a light or dark theme or allows to switch between light and dark mode on the website with browser preference or menu item. Possible values are 'light', 'dark' or 'auto'. Note that the 'structurizr' exporter (see 'generatr.site.exporter' setting) generally works better for the dark theme.                   | `light`                        | `auto`                                               |
 
 See the included example for usage of some those properties in the
 [C4 architecture model example](https://github.com/avisi-cloud/structurizr-site-generatr/blob/main/docs/example/workspace.dsl#L163).