  Color polarizabilities of the neutron are extracted from data on the lowest
moment of the spin-dependent $g_1$ structure function. New data in the
resonance region from Jefferson Lab at $Q^2 \alt 1$ GeV$^2$, in combination
with world data at higher $Q^2$, allow a systematic determination of the
$1/Q^2$ corrections, and provide the first constraints on $1/Q^4$ corrections.
The results suggest that higher-twist effects in the neutron are small, and
that quark-hadron duality may be approximately valid, even down to $Q^2 \sim 1$
GeV$^2$.
