There are several sites that provide various types of color help:
Category: design
The Good and the Bad according to Robin Williams
Good and Bad Web Design Features Robin Williams, author of many great design books, including my personal favorite, The Non Designer’s Design Book has a section on her Web site that gives a quick summary of good and bad design features. It is a useful list!
Web Page Color Scheming using your photos
Web Page Design for Designers – Editorial August 2002 An article by design artist Suzanne Stephens published on Web Page Design for Designers explains how to create color schemes using photos.
Classroom-Ready Graphic Design Site
Principles of Graphic Design This wonderful Flash presentation from Mundi Design Studios is an interactive explanation of Graphic Design principles.
Be sure to check out the other information on the Mundi Design Studios site, there is an interesting Web Color Theory section and a Flash5 Interface Design section that are both excellent.
Search thousands of logos
LogoLounge.Com You have to pay $10 for a membership, but this site has a database of logo and identity designs than can be searched. You can see what is already out there before working on a new logo, read articles on design and featured designers, see excerpts from new books and see reports on trends.
Thorough explanation of Wireframes
strange systems: Using Wireframes This article at strange systems, an information architecture site, goes into what wireframes are for, what you put in one, which pages need wireframes, and how much detail to include in a wireframe. It includes a list of resources and examples.
Need inspiration? Try these portals for good design
linkdup, Cool Web Design, netdiver, and Moluv lead to all sorts of inspirational design ideas.