How could set the colour of an object to fade i.e given a cone to be strongest at the point and gradually fade towards the base end? I''m using glMaterialfv(......)

Looks like you''d have to make the cone yourself, & then do it the old fashioned way by specifying a seperate vertex colour for the apex and the base verticies.

--wav

does that mean I can''t achieve it if I''m using gluCylinder (...)?

cheers