Well for those of us with an iPhone, Benjamin Moore has made this process a little easier with their "Color Capture" application.
This handy app allows you to take a picture of anything, and it will match your picture to a selection of Benjamin Moore paints that are most like your picture. So if you are in a store and love the coral hue of a cashmere sweater, or if you in the Caribbean and want a paint that remind you of the turquoise waters you have spent the week swimming in, this is the app for you! It also allows you to store a record of favorite paints, and find local retailers that will carry your selected paint color.
Here is a short video by Benjamin Moore that will show you just how this fun app works!