

A608 is based on an undated photograph of Niki taken in dull conditions with exterior lights on. Other photographs show light blue, so the darker appearance may be misleading. A photograph of Rose II from May 2000 likewise shows an apparently black funnel, but with possible blue tints under what may be photographic lightening.
A609 comes from a photograph of Archangelos R dated 27 July 2006; the same funnel is also shown on Niki on 7 February 2006. Later photographs of Niki show a change of hull colour from black to blue. The shade of blue may nevertheless have remained unchanged, with apparent differences caused by the cameras.