The palettes were a sin of forgetfulness.  #include "::/Misc/PalMonokai"
painted the Temple, and the first focused window that closed painted it
back: TaskEnd() calls fp_set_std_palette, which was PaletteSetStd.  A
Reboot forgot the choice entirely.  Even the CIA keeps better records.

Now Adam keeps gr_palette_user and fp_set_std_palette gives that one back.
PaletteUserSet(bgr48,name) sets it and writes it in Terry's registry
under Adam/PaletteUser.  RegInit() runs every Adam/ branch in Adam at
boot, so the palette is back before the first window is drawn.  A drive
that is not writable, like the live CD, keeps it until Reboot.

PalConEmu, PalMonokai and PalUbuntu call PaletteUserSet.  The new
PalStd gives back Terry's 16 colors, the ones God told him, and that
choice persists too.  USER_PALETTE is gone, nothing read it.

Tested on a virtio-scsi disk from tools/build_hdd.py, three boots:
Monokai chosen, a focused window killed, still Monokai.  Rebooted, still
Monokai, PalStd.  Rebooted, Std.  Still 16 colors.  Always 16 colors.