Ellis Vener , Feb 26, 2007; 08:50 a.m.
How do you mean 'resize" raw files?
Do you mean the original raw files or TIFF, PSD or JPEG derivations made from them?
The easiest and most direct way is to use Image Processor in PsCS2. You can access this directly through Adobe Bridge, an integral part of PsCs2. In the Bridge menu bar, go Tools > Photoshop > Image Processor.
If Bridge and Adobe Camera Raw are not recognizing a specific camera's raw format, you will need to update ACR to ACR 3.7. If you have a legitimate , registered version of Adobe PsCS2 this done via a free download from adobe.com
As to your question about "losing color' . You need to learn about color spaces, profiles, choice of color working spaces in PsCs2 and color management in general. Which also means you have to start thinking about how the photos will be used down the line.
Since it sounds like you are pretty new to processing raw digital images, let me share with you a very solid piece of advice: never throw out , trash or discard your raw files.
You also will need to learn how to set up Adobe Bridge and Adobe Camera Raw.
While all of these subjects are basic, including basic color management, and can be mastered in an afternoon, they are a bit too involved for a short answer on an internet bulletin board. You should either take a class or invest in a good Photoshop book.