The females are iron blue, and have orange legs and black antennae.
2.
As a result of competition from the Collins Line, Cunard ordered of 1856, the first iron Blue Riband winner . " Scotia " was originally planned as a sister for " Persia ".
3.
Originally a mixture of iron blue ( Prussian blue ), yellow ochre and crimson lake, Payne's grey now is often a mixture of blue ( ultramarine or phthalocyanine ) and black or of ultramarine and Sienna.
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