While most of us are limited to the visible spectrum, people with a condition called aphakia possess ultraviolet vision. Aphakia is the lack of a lens, due to surgical removal for cataracts or congenital defects.
A railroad lantern and a railroad lamp are two different things. Lanterns were designed to be portable (i.e. carried) and were basically globes surrounded by a metal frame with a fuel source. When you think of a railroad worker swinging a signal, think lantern.
The engine's body work and wheels are painted in red with white stripes with a maroon smoke box and funnel. It has brass tubing, fittings, buffers and a coupling hook. There is also a bell at the back of the dome, which is rare to most locomotives in the UK. The engine has a large lamp mounted on top of its smoke box and sliding doors on each side of its driving cab. It's front buffer beam is curved, which make it look streamlined.