Put #FFFFFF back into the palette.

Some of the female hairstyles use #FFFFFF, which I had originally changed
to #FAF8F9 when I standardized the palettes -- the two colors weren't
visually distinct. Later it turned out that in some recolors, that extra
color does make a big difference; so, put it back.
Remove #E8CFE4 from the palette.

Page and page2 were non-palette, and used #E8CFE4 incidentally for a few
pixels when they mapped to a palette; use another color instead. Plain
and ponytail2 used #E8CFE4 and #FAF8F9 as the two lightest colors; change
these to use #FAF8F9 and #FFFFFF to match everything else.