set isosurface {mixed|triangles} set isosurface {no}insidecolor <n>
By default the inside of an isosurface is drawn in a separate color.
The method of choosing that color is the same as for hidden3d surfaces,
where an offset n
is added to the base linetype. To draw both the inside
and outside surfaces in the same color, use set isosurface noinsidecolor.