  We investigate the so-called monochromatic arm exponents for critical
percolation in two dimensions. These exponents, describing the probability of
observing j disjoint macroscopic paths, are shown to exist and to form a
different family from the (now well understood) polychromatic exponents. More
specifically, our main result is that the monochromatic j-arm exponent is
strictly between the polychromatic j-arm and (j+1)-arm exponents.
