  Within the Color Glass formalism, we construct the wavefunction of a high
energy onium in the BFKL and large-N_c approximations, and demonstrate the
equivalence with the corresponding result in the Color Dipole picture. We
propose a simple factorization formula for the elastic scattering between two
non-saturated ``color glasses'' in the center-of-mass frame. This is valid up
to energies which are high enough to allow for a study of the onset of
unitarization via multiple pomeron exchanges. When applied to the high energy
onium-onium scattering, this formula reduces to the Glauber-like scattering
between two systems of dipoles, in complete agreement with the dipole picture.
