Driven of BoardMod (aka LoneWebSurfer of the YaBB Support Team) has published a new YaBB 2.x.x theme on BoardMod's Template Vault board... Fire N Ice [2.2.x].  Here is a reprint of Driven's announcement post:

A bright, bold template.  Ive included a blank .psd and a .jpg of the logo so you can put your site name on it..

Be sure NOT TO resize the logo or it will not match up right...

live demo
Enjoy
Driven aka LoneWebSurfer