Create a new underline color attribute.
This attribute modifies the color of underlines. If not set, underlines will use the foreground color.
the red value (ranging from 0 to 65535)
the green value
the blue value
the newly allocated PangoAttribute, which should be freed with [method@Pango.Attribute.destroy].
1.8
See Implementation
Create a new underline color attribute.
This attribute modifies the color of underlines. If not set, underlines will use the foreground color.