  We present an analysis of optical lightcurves of Small Magellanic Cloud
Be-type stars. Observations show that (1) optical excess flux is correlated
with near-IR excess flux indicating a similar mechanism and (2) the lightcurves
can trace out ``loops'' in a colour-magnitude diagram. A simple model for the
time dependent bound-free and free-free emission produced by an outflowing
circumstellar disk gives reasonable fits to the observations.
