tty menu coloring tweak

tty menu coloring tweak

Start coloring after the space which follows the selection indicator
instead of on that space.  The difference isn't noticeable when the
highlighting is just a color, but it is if that highlighting includes
inverse video or underline which visibly apply to spaces.  So for
a - entry A
the old code produced
a -########
and this revised code produces
a - #######
where '#" indicates characters subject to menu coloring.