Every wooden tube is different.  The photos will provide you an approximate color and grain pattern. 

 Figured Hard Maple is creamy white with a reddish tinge and usually has a straight grain, sometimes curly or wavy. Fine brown growth rings give an attractive figure on plain sawn surfaces.

Each tube is made from the same board. Sawn in order, machined and a hollow hex shaped tube is glued up. The outside of the hex tube is turned to form the round tube.

Figured Maple

Spalted Maple