  Recent observational and theoretical studies of classical Be stars have
established the utility of polarization color diagrams (PCD) in helping to
constrain the time-dependent mass decretion rates of these systems. We expand
on our pilot observational study of this phenomenon, and report the detailed
analysis of a long-term (1989-2004) spectropolarimetric survey of 9 additional
classical Be stars, including systems exhibiting evidence of partial
disk-loss/disk-growth episodes as well as systems exhibiting long-term stable
disks. After carefully characterizing and removing the interstellar
polarization along the line of sight to each of these targets, we analyze their
intrinsic polarization behavior. We find that many steady-state Be disks pause
at the top of the PCD, as predicted by theory. We also observe sharp declines
in the Balmer jump polarization for later spectral type, near edge-on
steady-state disks, again as recently predicted by theory, likely caused when
the base density of the disk is very high, and the outer region of the edge-on
disk starts to self absorb a significant number of Balmer jump photons. The
intrinsic $V$-band polarization and polarization position angle of $\gamma$ Cas
exhibits variations that seem to phase with the orbital period of a known
one-armed density structure in this disk, similar to the theoretical
predictions of Halonen & Jones. We also observe stochastic jumps in the
intrinsic polarization across the Balmer jump of several known Be+sdO systems,
and speculate that the thermal inflation of part of the outer region of these
disks could be responsible for producing this observational phenomenon.
Finally, we estimate the base densities of this sample of stars to be between
$\approx 8\times 10^{-11}$ to $\approx 4 \times 10^{-12}\,\rm g cm^{-3}$ during
quasi steady state periods given there maximum observed polarization.
