There will be more than one sample theme, we will provide a few themes (more than 2) that you can use out of the box.
Also we plan to let the user set some colors of these themes via BP node parameters.
We are currently working on that feature.
The deadline for us to release the Modular Menu System is end of November at the latest.
I will post a screenshot of the first real theme in the next few days.
Cheers!