This is similar in composition to results reported for the polychrome roundels and capital of the S. Ambrogio Basilica's Portal, where the paint was applied directly on the marble substrate using mixtures of yellow, red, and green colourants and gypsum [8].
Three of the blue and green glasses from Jebel Khalid owe their colours to the presence of these colourant oxides.
Doctors have given Julie McCabe, who coloured her hair with L'Oréal Preference colourant three weeks ago, an 8% chance of survival with little chance of a full recovery.
For a better visualization of the data, each colourant is represented with a specific colour.
Aluminium sulphate, often sold as hydrangea-blueing compound, is the best product to change flower colour in hydrangeas – try Vitax's Hydrangea Colourant.
Other green to pale greenish or pale bluish glasses do not contain a significant quantity of this colourant, and derive their colour from iron, introduced as an impurity in the glass raw materials in similar concentrations in all samples [2: pp. 35, 48, 143, 61: p. 180T, 66: pp. 91, 163 164].
Match the colour of the rest of the leather then apply a leather colourant to the top layer of filler with a cotton wool bud.
Elevated iron would appear to be associated with the cobalt colourant in the Rhodian and Tel Anafa glasses, while the Jebel Khalid sample is from the dark green mosaic glass (JK01).
I have now stopped using permanent colourant.
Irn-Bru, the sugary orange caffeinated brew, described as "Scotland's other national drink", contains Ponceau 4R, a synthetic red food colourant which is not permitted in Canada.
