COLOR CODE • DICTIONARY ONE.COM • Definition of Color code

... time that the paneling makes its exit, the large hearthstones are pried from position and moved to a waiting truck. All that now remain are the chimney and timber frame. By this time each joint of the latter has been numbered and given its color code. With a simple derrick and ropes and pulleys, dismembering the frame commences. The pins that make the joints tight are removed by driving or boring. Roof rafters and purlins come first; then the ...

— If You're Going to Live in the Country • Thomas H. Ormsbee and Richmond Huntley