The stochastic transport driven by flashing multi-noise sources in a ratche
t is studied. The stationary current versus the noise strength and the colo
red noise correlated time T is obtained. At a fixed flip rate and strength
of the colored noises, the novel phenomenon of the current reversal occurs
as T reaches a certain value. More than one reversal point exists when a fl
ashing colored noise source and a flashing white noise source are simultane
ously taken into account.