Free Color Picker , if you want to know the hexadecimal or RGB value for a colour you see on a Web site or desktop ? I use a colour picker  http://www.iconico.com/colorpic/ . It is veryadvanced for most purposes , has a lot of features and fairly easy to use.

To capture a colour, you simply click on the ColorPic box to make sure it is active, then run your cursor over the colour you want to capture. Click Ctrl-G to grab and add the colour chip to the palette. You also click Ctrl-G on a colour chip to delete it from the palette, so it's kind of a toggle.

Copy and paste the Hexadecimal or RGB values into Photoshop or XSite Pro and voila! Now you can duplicate any colour you see online or on your computer.

Hint: To find the RGB values of a colour for XSite Pro, enter the hex value in the Color section in the field that has a "#" in front of it. The RGB (Red, Green, Blue) values will appear below in the Mixer section.

 

 

As promised here are xsite pro templates