Refer to the emphasis everywhere context in the Arbortext-path/samples/ALD/Colour/SettingColours.xml sample file. The context includes a set of conditions based on the value of the role attribute in the associated stylesheet. Each condition references a different property set.

For example, the condition ELSE IF attribute “role” = “CMYK underline colour” of the emphasis everywhere context references the CMYK underline colour property set. This property set sets a text underline color in CMYK format, where each of the four values is specified as a number in the range 0-255. The relevant code in that property set is given below.

Here you have added an underlineRule property to the styling assigned to the inline text. That property is based on the fTextRule object, which takes a color property. The value of color is described in CMYK format.

Note that this code does not apply an underline to the text. That is handled via a property setting in the Text property category in the Arbortext Styler UI.