from Boing Boing by
Mark Frauenfelder
Mark Frauenfelder: How to use Photoshop's "Match Color" tool with classic paintings by the old masters to make your digital photos pop.
I keep a directory of about 30 of my favorite paintings and anytime I need to do color correction, I just scan through them to find the one that gives the photo I'm working on the best look. This technique can be used in other ways. For example, use the color from a scanned-in 1970's Kodachrome snapshot to give a recent photo a vintage look. Need to make a picture more menacing? Use the color from a picture of a storm.
Link (Via Lifehacker)