Titanium areas are left unpainted, in their natural titanium colour.

The parts in the design that are intended to be white are left unpainted.

But currently, he said, the city spends far more, about $400 million, because it must replace rusted steel that was left unpainted.

Considered a success, trains were left unpainted or painted white or grey to match in 1963-68.

The tower was left unpainted for the first fifty years, but had grown so discolored that it was painted red around 1910.

A wide border and central narrow stripe at the pool's edge are left unpainted.

The wagon was recovered, repaired and returned to service, with the replacement planks left unpainted for some time after the accident.

Except for a few areas left unpainted, the whole building has been redecorated in garish green and blue.

Later versions have the metal components of the mask left unpainted.

In contrast to the existing walls, the silver surface of the new siding was left unpainted.