glDisable(GL_TEXTURE_2D);
glEnable(GL_LIGHTING);
glEnable(GL_NORMALIZE);

GLfloat Material_1[] = { 0.000000f, 0.000000f, 1.000000f, 1.000000f };

glBegin(GL_TRIANGLES);

  glMaterialfv(GL_FRONT,GL_DIFFUSE,Material_1
  glNormal3d(0.000000,-1.000000,0.000000);
  glVertex3d(-2.500000,0.000000,-2.500000);
  glVertex3d(2.500000,0.000000,-2.500000);
  glVertex3d(2.500000,0.000000,2.500000);

  glNormal3d(0.000000,-1.000000,0.000000);
  glVertex3d(-2.500000,0.000000,-2.500000);
  glVertex3d(2.500000,0.000000,2.500000);
  glVertex3d(-2.500000,0.000000,2.500000);

  glNormal3d(0.894427,0.447214,0.000000);
  glVertex3d(2.500000,0.000000,2.500000);
  glVertex3d(2.500000,0.000000,-2.500000);
  glVertex3d(0.000000,5.000000,0.000000);

  glNormal3d(0.000000,0.447214,-0.894427);
  glVertex3d(2.500000,0.000000,-2.500000);
  glVertex3d(-2.500000,0.000000,-2.500000);
  glVertex3d(0.000000,5.000000,0.000000);

  glNormal3d(-0.894427,0.447214,0.000000);
  glVertex3d(-2.500000,0.000000,-2.500000);
  glVertex3d(-2.500000,0.000000,2.500000);
  glVertex3d(0.000000,5.000000,0.000000);

  glNormal3d(-0.000000,0.447214,0.894427);
  glVertex3d(-2.500000,0.000000,2.500000);
  glVertex3d(2.500000,0.000000,2.500000);
  glVertex3d(0.000000,5.000000,0.000000);

glEnd();