Tail surfaces are usually flat plates... use the "wing" option to generate these.
Zero out the stablizer option...
..for spanwise coloring wings with multiple sections and shapes...
Multicolored wings can be done by modifying the airfoil .xy file chordwise..
instead of using the "fuselage" option..permitting changing the
dihedral and sweep of all sections simultaneously..
..SIG Senior Kadet with colored wings and tail as above...