Ipas
Kevin,
RobertR and KevinK both have the answer, projector spot lights. You may
have to use multiple spot lights with the gradient bitmap to get the color
evenly around your object.
I had to produce a simular effect awhile back of a marble material man
running thru a tunnel of different color bars that _shined_ their color onto
him as he went by. Just used thin rectangular spots positioned at the
appropiate bars with the appropiate color.
Ralph