  Within a light-cone QCD formalism based on the Green function technique
incorporating color transparency, coherence length effects and gluon shadowing
we study electroproduction of vector mesons off nuclei. We found rather large
color transparency effects in the range of Q^2 < 10-20 GeV^2. They are stronger
at low than at high energies and can be easily identified by HERMES or at JLab.
We provide predictions for incoherent and coherent vector meson production for
future measurements.
