Jaguar Concept Collection Pens

The new Jaguar Concept pens are meant to mimic the lines of the Jaguar XK  with sleek aerodynamic lines. The aluminum pen is layered with glossy lacquers and has beveled-edge, chrome clip which points to the Jaguar emblem on the pen. The fountain pen has a stainless steel and iridium nib engraved with the Jaguar logo. The Concept series also includes a rollerball, ball pen and 0.7mm pencil. The pens comes in three classic Jag colors, ebony, ivory, British racing green, and one non-traditional, lime green. The fountain pen sells for $175, the rollerball is $160 and the ball point and pencil are $135 each. Very simple and classic but why the lime green?