Wednesday 07 November 2018
City University London,
London, EC1V 0HB
Presentations by the recipients of the WDW, Palmer Awards and Student Grant Scheme.

Wednesday 03 October 2018
City University London

A poet and publisher, Brian Lewis, and a woodblock printer and typographer, Alan Kitching talked to the Group about their work and gave examples of what they did and why.
Brian Lews 1 Alan Kitching
Above, Brian answers a searching question from the audience about the way colour affected his poetry. He showed and read from his recent small book The Rose of Tempraments which contains the work of seven poets each writing about a different colour and the tempraments it induces. Above, Alan makes a point about his vaste collection of type blocks and below explains below how he produces his striking images, starting with an enormous block printer but sometimes incorporating modern computing, scanning and printing technology.
The Rose Alan Kitching 2

16th International Symposium on the Science and Technology of Lighting
Monday to Friday 17-22 June 2018
University of Sheffield

The Colour Group (GB) supported a session on colour science and technology at the Symposium. The goal of the session was to bring experts in the domain of human colour vision and colour perception to this interdisciplinary conference and facilitate interactions with the professionals from the lighting industry. The speakers were Annette Allen (University of Manchester), Sophie Wuerger* (University of Liverpool), Sebastian Babilon (Technical University Darmstadt), Danny Garside* (University College London), Luke Price (Public Health England), Andrew Stockman* (University College London) and John Barbur* (City, University of London). Manuel Spitschan* (University of Oxford) was the Session Chair. (Colour Group (GB) members indicated with *).
Barbur slide

Many of the slides were colourful like the top image from John Barbur.
The presenters pictured were Annette Allen (ABOVE LEFT) and (ABOVE RIGHT) Luke Price.
Also presenting were Danny Garside (BELOW LEFT) and Sebastion Babilon (BELOW RIGHT).
And as the bottom image shows, the presenters' enthusiasm was maintained by Sophie Wuerger

Danny Sebastion

Wednesday 02 May 2018
City University, London
After the AGM, which for the first time in many years involved a ballot for an officer post, Andrew Hanson of the NPL, Teddington, delivered a most entertaining and thought provoking talk. What are the primary colours? What do you see in different situations? He managed to catch out most of the great and the good of the Colour Group present with some apparently most simple questions that are, in fact, not at all simple to answer. The audience retired to the tea to discuss the impications of Andrew's questions.
Below left is a photo of Andrew and a colourful bouquet - lovely!
Andrew and flowers mirror

On the right above is a photo of a dusty mirror especially brought in by a member to intrigue people over tea, Ordinary mirror, ordinary white torch, ordinary dust - but note, the coloured bands.
Our member, Ed, offers the following explanation:
When I chanced upon a dusty mirror in a charity shop I immediately bought it, strongly insisting it wasn't to be wiped clean or wrapped! I wanted to use it for demonstrating a colourful interference pattern named after the astronomer Adolphe Quetelet, who observed the phenomenon and explained its formation.
Quetelet rings arise from interference of the light that is first scattered by a particle and then reflected by the surface, with the light that gets first reflected and then scattered by the particle. Contributions of these two paths to the scattering differ by a phase factor that depends on the wavelength and the angles of light incidence and scattering. Depending on the phase difference, these contributions may interfere constructively (contributing to a white band) or destructively (contributing to a black band). In the case of illumination by white light the patterns produced by different wavelengths are slightly misaligned with each other and that results in a colouring of the rings.
The pattern requires a mirror with the reflecting surface on the back, which is the case for ordinary glass mirrors. I sprinkle on talcum powder and smear it over the surface. Wikipedia has a video demonstrating Quetelet rings as seen on a mirror covered in flour while a flashlight is moved around the observer.

Wednesday 04 April 2018
City University, London
Anne Jackson started the afternoon by describing her fascination with whitchcraft inspired by the records of whitch trials. She developed a form of knotted tapestry and showed many examples of these, the first being of a flying whitch and the magic word, derived from the Arabic, that everybody knows. She went on to show tapestries of whitches, their fates and their familiars. And some rather scray stuff too.
abracadabra tapestry
OReilly OReilly
OReilly Philip O'Reilly, who had organised the event, was the middle speaker and described his extensive tour of Turkey where he studied how traditional methods, though simple, made wonderful carpets. He sketched, painted and wove his way around the counrty and has subsequently experimented with felting and more recently many different kinds of textiles and holographic foils.
Margot Selby described her development from art student to a professional fabric designer working for well known international companies. She showed some of the sources of her inspiration (SEE BELOW) and admitted that she was always striving to make creative art with coloured fabrics but that designing for the commercial world paid the bills. She has recently developed a series of designs which when framed under glass were clearly more art than commercial (BELOW RIGHT). Selby
Design Art at last

medal flash


cc uk


T he Colour Collective in Newcastle kicks off their winter programme with an event entitled The Private Life of Colour at 17.15 in the evening on 19 September at Newcastle University. Speakers are Derek Brown, Joe Crutwell and David Simmons. You may read more about the event and book tickets here.

Queens silks


I guess we all know jockeys on race horses wear coloured tunics (pictured here are the Queen's registered silks) - but what was the origin of all these colours? Thanks to the Daily Mail we know a bit more:

Racing silks first appeared in Britain in 1515 when Henry VIII was on the throne. The frequency of race meetings and the number of horses in each race led to confusion, so in 1762, the English Jockey Club at Newmarket requested that owners submit specific colours for their jacket and cap. There are 18 basic colours that can be used in conjunction with 27 jackets and nine cap designs. Shapes and patterns may also be used, such as checks, diamonds, cross-belts, crosses and circles, together with epaulets and braiding. However, the jockey's breeches must always be white. To ensure the design is unique and has not been assigned to someone else, racehorse owners have to register their chosen design of silks with the Jockey Club and Weatherbys.... Colours can be registered for a year, five years, ten years or life. Unlike horses' names, they can be taken by someone else if you cancel your registration. If the owner has more than one horse in the same race, the jockeys wear different coloured cap covers to avoid confusion. Steve Woods, King's Lynn, Norfolk. The Daily Mail, 10 May, 2018.



RACreports the most popular car colour is now grey - but is grey really a colour? Answers on a postcard etc, etc.

purple 2018


OKso you probably missed out on the announcement of the Pantone Colour of the Year what with the Beast from the East, One and Two, and Easter, etc, but this year's colour is Pantone UltraViolet, or simply purple to most people. May be the Royal Wedding had something to do with the choice.



The Bowdoin College Museum of Art (Brunswick, Maine, USA) has developed a technique using a projector to give visitors an impression of what 3,000-year old Assyrian stone reliefs would originally have looked like in full colour. The work is reminiscent of that described to the CG(GB) in 2013 by Patrick Callet (Paris) - see Spectral Simulation for Cultural Heritage, CG Occasional Publication number 3, which may be downloaded.

The Bishop
"How we explored medieval theories of colour through glass"

This is the title of an article about a new exhibition which is based on the ideas of what colour is as put forward in the 13th century by Bishop Grosseteste. Get yourself a piece of history and click the link.



It seems the great lizards did exhibit surface colours but not quite in the way a good Colour Group members might wish with high chromatic values from across the spectral gamut like our trichromatic friend here. Bone up on the real research in Current Biology (here) or a simpler version from ABC (here).

RGB bacteria


In a study published in Nature Chemical Biology, MIT researchers manipulated E coli genes so that they respond when illuminated by red, green, or blue light they fluoresce red, green or blue. So a coloured image projected onto a bacterial mat causes the bacteria to emit red, green or blue light thus becoming a living display. This won't replace LED or plasma screens but is a useful step on the road to fully understanding gene manipulation. If you can stomach the breathless journalism you can read more at on the ARS Technic UK web pges or better, read the original.


Iguess you all know what the Pantone Color of 2017 is - see left. If you want to see a feast of green visit the Pantone web pages by clicking here.
But can you remember what the colour of the year was in 2010? The table below will jog your reluctant memory. 28-04-17
Pantone table


The history of printing is not in black and white. Colour played an essential role in print culture even before Gutenberg printed his Bible, but it has long been hidden in plain sight because colour printing is rarely recorded. old colour print
This interdisciplinary, introductory course provides an overview of colour printing techniques in the West from manual techniques c.1400 through the development of chromolithography in the mid-1800s.
The Institute of English Studies, University of London, is offering this week-long course running 10 to 14 July as part of the London Rare Books School (LRBS), with reduced fees for students. Further details at here. Other courses at this year's LRBS can be found here: here.

biomimetics logo

at Imperial College:
CG(GB) Sponsors Prizes

The CG(GB) has agreed to sponsor two student prizes for the meeting at IC. The meeting is described so:
Ever since humans contemplated replicating the flight of birds, biomimetics has sought solutions to complicated problems by examining how Nature, with the advantage of several millions of years of evolution, has tackled them before. Nowhere is this more apparent than in optics where some of the rich optical behaviour presented through evolutionary nano-structuring can now be replicated to our advantage in the laboratory. Structural colouration of morpho butterfly wings, for example, was recently commercialized to produce interferometric modulation to define pixel colouration in displays.
Click for more details of the meeting.

DATE 06 October 2018