You can add a color panel to your themes:

http://theme.fm/2011/07/how-to-provide-different-color-schemes-for-your-wordpress-theme-891/

Using Color Picker in your theme:

http://theme.fm/2011/08/using-the-color-picker-in-your-wordpress-theme-options-2152/

A very useful article:

http://wpengineer.com/2249/wordpress-custom-post-types-get-into-the-loop/

Want to know the secret of having a custom WordPress Theme just like the coding and design experts—without having to create your own custom WordPress Theme?

Are you a WordPress site developer wanting to significantly cut your development time by using your own WordPress Theme Framework?

Or do you just plain wish editing WordPress Themes was smarter and easier? Then read on.

These easy to follow tutorials will teach you how to modify WordPress Themes the smart way—by unlocking the power of WordPress Child Themes.

Click here to continue reading

How To Make Your Theme WordPress 3.0 Compatible

8 useful code snippets to get started with WordPress 3.0

How to add Backwards Compatible WordPress 3.0 Features to Your Theme

How To Make Your Theme Compatible to WordPress 3.0

How To Make Your Theme WordPress 3.0 Compatible

How To Create a WordPress Theme: The Ultimate WordPress Theme Tutorial

Coding A WordPress Theme From Scratch

Tutorial: Code a WordPress Theme from Scratch (part 1)

How To Create WordPress Themes From Scratch Part 1

Please check these nice articles:

The Easiest Way to Use Any Font You Wish

Font Replacement Using Cufón

http://info.template-help.com/files/Html/how_to_use_cufon.htm

http://www.websitemagazine.com/content/blogs/posts/archive/2009/04/27/web-design-use-cufon-for-text-replacement.aspx