bold & inverse curses?

[F. S. Kuhl]

We're using the curses library for a project that is to display on
VT-220's.  The 220 allows bold and inverse video attributes to be set
independently for text.  We want to create normal text, bold text, and
inverse text, but curses seems to support only a 'standout' mode that can
be either bold or inverse, but it doesn't appear to have another mode.
Are we missing something?  Is there a way to add a mode to curses?