Here are a selection of screenshots showing the default theme by Luciano Ayres of Blocktronics:

User Logon Matrix
User Logon Prompt
New User Application
File Base Browser (full ANSI support!)
User Lister
Adding a Rumour (with live pipe code preview!)

Here are some screenshots from heavily customised ENiGMA½ boards, showing what’s possible:

Login Matrix
Login Prompt
System Stats
User Stats
Main Menu
Message Lister
Full Screen Message Editor
ASCII artwork (note the font switching!)
Built-in oneliner
BBS Listings