STRUCTURE: UF_CGM_width_color_t

DESCRIPTION: This structure describes a custom width by color index.
The width_source member has the following values:

-1 not a custom width (UF_CGM_NOT_CUSTOM_WIDTH)
>=0 custom width index - value is the index into the
custom member of the main structure below.

Note that the index is an internal one.

Note that the width member of this structure contains the
actual width to use with its color index, regardless of the
source.