Replace color names defined in .Xresources for older version of xrdb

fix_Xresources.sh

#!/bin/bash

err() {
    echo "ERROR: $@" >&2
}

: ${INFILE:="$HOME/.Xresources"}

if [[ $# -gt 0  ]]
then
    INFILE=$1
fi

test -e $INFILE || {
    err "input file '$INFILE' not exist"
    exit 1
}

sed_commands=$(awk '/#define / {printf "-e 's/%s/%s/g' ",$2,$3; }' $INFILE)
sed -e '/#define /d' -e '/!!/n' $sed_commands $INFILE