  We calculate the phase diagram of color and electrically neutral quark matter
in weak equilibrium using the NJL model at high baryon densities. We extend
previous analyses by taking into account the possibility of formation of
pseudoscalar meson condensates in the color-flavor locked (CFL) phase. We find
that the kaon condensed phase (CFL-K0) is preferred over the CFL phase at low
temperatures. It is found that the CFL-K0 phase contains no gapless modes. The
results we have obtained should be of relevance for the modeling of compact
stars.
