Replace background image with GIMP generated purple cloth bitmap. The old image had joins when it repeated. RReplace with a bitmap of colour 8000ba with GIMP Aristic/Clothify filter applied with Blur X/Y 20 and depth 1.

#!/bin/sh

if [ $# != 1 ]; then
    echo "Usage: make.sh <book dir name>"
    exit 1
fi

booke=$1

find $booke -name "*.abc" | sort | xargs abcm2ps -F dottes.fmt -O $booke.ps