While working with http://technize.com I had one problem .. adjusting all the colors. I had to copy the screen shot of the whole blog into Adobe Photoshop and then pick the color code from there and then put it in the stylesheet. Then I found out two softwares which could do this for me. They can pick the color of any place on the screen.
1- Color Cop
Color Cop is a multi-purpose color picker for web designers and programmers. It features an eyedropper, magnifier, variable magnification levels, 3 by 3 and 5 by 5 average sampling, snap to websafe, color history, and a 42 color complementary palette. Color Cop will convert RGB decimal values to Hexadecimal color codes. It has color code support for HTML Hex, Delphi Hex, PowerBuilder, Visual Basic Hex, and Visual C++ Hex. Color Cop is a multi-purpose color picker for windows.