COPY_GREYTOBACK
nlgs 2 1 10000
nlgs 0 1 10000
nlgs 1 1 10000
nlgs 2 4 64
nlgs 0 4 48
nlgs 1 4 24
MIX_BACKTOGREY 0.5
nlgs 0 8 32
nlgs 1 8 24
nlgs 2 8 16
ERASE_BACK
