I have only ever used the pen colour option to graph.
ie. at least this does something, so it can't be all broke
echo '1 2 3 4 5' | graph -a -p r | plot
but indeed your line doesn't work for me either.
from a quick look all I can say is that these tools could
do with being converted to using ARGBEGIN{}ARGEND
(removing the space between the p & r above breaks it, eg.)
I found bcolor() but got no further. may delve later.
umbraticus
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