  We propose to study the onset of color transparency in hard exclusive
reactions in the backward regime. Guided by the encouraging JLab results on
backward pion and omega electro-production data at moderate Q^2, which may be
interpreted as the signal of an early scaling regime where the scattering
amplitude factorizes in a hard coefficient function convoluted with nucleon to
meson transition distribution amplitudes, we show that the study of these
channels on nuclear targets opens a new opportunity to test the appearance of
nuclear color transparency for a fast moving nucleon.
