Over the past few weekends, I painted a very special person's room. I knew I wanted a light, true gray. A true gray can be really hard to find; a lot of grays look great on the sample card, but once you paint them they have a purple, blue, or green tint. I know this all too well - we have 4 different shades of gray in our home, and we painted a ton of samples on the walls before we made any decisions. So, I thought I would share - if you're looking for a true gray, try Benjamin Moore Eternity (you can always get it matched at another store like Lowes to make it less expensive).
My pictures of the actual room did not turn out, but here are some I found online: