Here is something really cool I learned last week from my uber smart trainer Paul at the Apple Store during my One to One session. On my Mac I have a little application called the DigitalColor Meter. It allows me to match colors and know what that color is so I can easily replicate it throughout my site.
I had no idea that I had this little app. It is easy and very fast to use. Thanks Paul!
And for those of you using a PC I have no idea how you can do this and well, I'm sorry.