We stepped into Asia Crafts next door, where silver-tongued Kashmiris unrolled carpets that seemed to change colour every time they were turned upside-down.
At the same time, colour printing (subtler, it turns out, than computer graphics) came into its own.
And the views cycling in London are so vivid that it is like seeing in colour for the first time.
With a lead time of four weeks, it was able to get within one colour either side 90% of the time.
Dr McCreary says he has monochrome displays in the laboratory that can show video at 20 frames per second, and later this year the firm plans to demonstrate a colour display for the first time.
When the first navigators came here, there were lots of holes that rain water gathered in and over time it turned the colour of brandy or whisky.
The drawbacks of electrophoretic displays are that they have slow response times, since the pigment particles take time to move, and that colour versions are still in development.
For many photographers it is one or the other, as to shoot in both colour and black and white at the same time is not something that many can achieve.
Flavour is crucial, but I spend as much time thinking about texture, shape, colour and form.
There was a time when it was considered a masculine colour: now it is not.
Canon Glyn Webster, acting dean of York Minster, said people would be able to see for the first time the window's "rich colour and artistry".
BBC: Metal York Minster 'orb' displays medieval stained glass
One of his colour pictures shows Naomi Savage, his one-time assistant who developed her own career as a photographer, and no doubt inspired by Man Ray, also invented a process called photographic engraving.
"This is the first time anyone has ever had evidence of original colour of feathers in dinosaurs, " said Professor Benton.
In 1963 - a decade after the first 3D cinema trial in colour - Doctor Who appeared on TV for the first time.
Another example is Japan's National Bicycle Company, which turns out bikes in any size, colour or style without any increase in costs or delivery time.
An American child psychologist, Alison Gopnik, when reaching for an analogy to illuminate the world as experienced by a baby, compared it to Paris as experienced for the first time by an adult American: a pageant of novelty, colour, excitement.
He said that they thought it was the first time in the company's history that there had been a permanent change to the colour of the post boxes.
There were no restrictions on which patches to visit, but each time a card was plucked it had to be returned to the home base, irrespective of colour.
应用推荐