Deviating from the norm

So, photography geeks will know the term chromatic aberration as the red and green ghosting that appears around the edges of high contrast images - due to the optical properties of most lenses, which refract frequencies of light at different rates, causing different colours to form different focal points in the recorded image.

In this case, maybe he just didn't get the memo that everyone else was dressing in blue..

nophobia

local speciality

The island of Ischia is famed for its oversized lemons (some as big as melons!), and its traditional seaside produce, including coral harvested from the sea bed. The most prized coral in this region is takes the form of small antler-like branches of a bright red colour. Colours in the region vary, however, tending into pale and slightly purpley pinks. To see a coral coloured sun setting over the headland at Forio was one fine speciment of "local colour..."

categorical perfection (prussian blues)

indulgence or indiscretion