This is the paint box I am trying to match.
I was glad to find that pencils were pretty modern in 1863. These reproductions are available for $0.50 each through http://www.sullivanpress.com/
This paint box is available today through Dick Blick and made by Yarka St. Petersburg. I think it is a pretty good match!
This is a watercolor box from the era. It is considered a toy, but seems similar to the adult sets.