I encounter so often a neat color on a website or desktop application and want to grab that color for use in my own graphics and applications.

As a color-deficient individual I find this program to have a peculiar usefulness. When I come across a neat color and want to figure out exactly what color it is (ie. via HTML Hexidecimal or some other like manner) I use this free little application. Just Color Picker will allow you to zero in on a pixel and copy the color code equivalent to your clipboard. It's a very handy little tool.

Just Color Picker is distributed as a stand-alone executable.