Why when I use greyrast instead of rast colortable is still full-color, rather than in particular levels of grey? Matej -- Matej Cepl, GPG Finger: 89EF 4BC6 288A BF43 1BAB 25C3 E09F EF25 D964 84AC 138 Highland Ave. #10, Somerville, Ma 02143, (617) 623-1488