You can change the style of your prototype by simply switch its UI theme.
So far ForeUI support 5 UI themes:
|•||Mac OS X|
The Wireframe UI theme is the default one for newly created plot, which can be changed via the preference configuration.
To change the UI theme, just simply choose the UI theme from the drop-down list at the bottom:
Once you switch the UI theme, the current editing prototype will change its look, some elements in the elements panel will change their look as well.