Hi All,
I need to develop a theme that matches our corporate themes and was wondering if someone with experience wouldn't mind assisting me with some pointers.  As I understand that there is no real themes howto doc, I figure the best way to find out is to ask.

I wouldn't mid basing it on an existing theme, and users would still be able to change the theme to whatever they prefer, but it must at least start out looking like the rest of our intranets.

Thanks in advance.

PS, the good news is I have finally convinced my superiors of the merits of a wiki;)