Create a new overline color attribute.
This attribute modifies the color of overlines. If not set, overlines will use the foreground color.
the red value (ranging from 0 to 65535)
the green value
the blue value
the newly allocated pango.attribute.Attribute, which should be freed with pango.attribute.Attribute.destroy
Create a new overline color attribute.
This attribute modifies the color of overlines. If not set, overlines will use the foreground color.