Customizable atom with full control over every ring

An even more customizable atom:
The electrons are not filled in automatically, you have to specify the number of rings and the number of electrons on each ring.

For the simpler version, please visit:
http://www.thingiverse.com/thing:112792

Edit: There is a remix of this Thin with pre-configured Atoms and Text!
http://www.thingiverse.com/thing:114247