Colour is defined via reference in the items description in section #emph by a symbol |cX where
X is an upper case letter representing a given colour. The particular colour to be used is defined by implicit settings directly in the Lexicon programme. But there
is a possibility to change it in #colo subsection. The colour is defined as a ratio of RGB components (R=red, G=green, B=blue)
The weight of each item is defined as a hexadecimal number increasing from 0 to FF.
0 = "00-00-00"
black
R = "AF-00-00"
Red
G = "00-AF-00"
Green
B = "00-00-AF"
Blue
X = "00-00-AF"
eXtend for entry
H = "FF-00-FF"
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