Please don\'t reply I should use ffffd, nemiver, emacs, vim, or any other front-end, I just prefer gdb as it is, but would like to see its output with some terminal colors.
you can get whatever colors you want;
# gdb (gdb) shell echo -en '\E[47;34m'"\033[1m" ... anything is now blue foreground and white background ... (gdb) shell tput sgr0 ... back to normal