N.H. Rev. Stat. Ann. § 669:55

In the election of officers by unofficial ballot, the town clerk shall prepare and provide to the moderator pieces of white paper of uniform size and weight to be used as ballots; provided, however, that if more than one ballot is used during any town election, each ballot shall be of a different color than any other ballot used at the election. The ballots may, at the discretion of the clerk, have printed on them the names of the offices to be elected, such as "For Selectman," or "For Town Treasurer." However, no names of candidates shall be printed on the unofficial ballots.