lighting on mesh

i turned a mesh using evaluators into a form of a letter ā€˜jā€™ (without the dot on top).

is there any way i could make the mesh display its shininess and solidness correctly. i used GL_FILL for glEvalMesh2 and whenever i rotate the object, the mesh blinks from red (i changed its material into red (a,s & d) ) to white then vice versa.
can anyone help me with this problem?
thank you for your concern. :slight_smile:

Can you post your code?