167ZYXWVUTSRQPONMLKJIHGF
n food colouring
Liquid or dry mix ingredients used as colouring for a wide variety of foods including
ready-made meals, convenience foods, soups, sauces, seasoning, beverages, cakes,
desserts and dough. One US company, D.D. Williamson, produces 62 different
types of caramel colouring for convenience foods. See also E-number colours.
n footlights
Theatre lighting set out in a row across the front of the stage and pointed towards
the actors.
c forest-green
An olive green slightly darker than Lincoln green; sometimes a yellowish green
or a dark muted green.
c ForestGreen
One of the colours in the X11 Color Set. It has hex code #228B22.
c forget-me-not blue
The pale blue colour of the forget-me-not flower – a symbol of constancy.
n four colour theorem, the
The mathematical proof that on a map of any number of different territories,
however their boundaries may be configured, no more than four different colours
are required to ensure that no two contiguous territories need have the same colour.
n four colour theory
The notion advanced by Pliny that the painters of ancient Greece deliberately
restricted themselves to a palette consisting of only four colours – red, black, white
and yellow. However, since there has been much linguistic confusion between
yellow and blue (the old French word bloi meant both colours – and see flavus)
the four colours may have included blue rather than yellow. Some experts argue
that the four colours were red, yellow, blue and green.
n four-colour reproduction
Printing employing four coloured inks – cyan, magenta, yellow and black. See
CMYK.
n fovea
Part of the mechanism of the eye at the centre of the retina and containing cones
which respond to colour.