Make button face appear magenta on a Linux console

[Nick Roberts <nickrob@snap.net.nz>]

The button face uses underlining but the Linux console doesn't have that
capability.  So although the [back] button in a help buffer suggests a link,
it's not apparent that you can press <RET>/click on the the word `customize'
(which is unquoted in the help buffer) to customize a variable.  I see that in
an xterm that doesn't have underlining, the button face has a magenta
foreground (and in one that does, it keeps it's default colour - how clever is
that!).  Can someone who knows how this all works give the button face on a
Linux console a magenta foreground please? (not directly though, but via the
underline mechanism).

-- 
Nick                                           http://www.inet.net.nz/~nickrob