simple script to find and colorize file in a folder(s) (rainbow edition)

colorize_rainbow.sh

#!/bin/bash
#
# A simple colorizer script for ImageMagick to batch modify
# resource images.
# -KhasMek

file=${1}
location=${2}

if [ ! "$location" ]; then
    location=.
fi

if [ ! "$file" ]; then
    file=*.png
fi

find $location -name $file | while read line
do
    # I don't think this will actually be necessary.
    #if [ find $line -name *.9.png ! = "" ]; then
    #    echo "$line is a 9 png, cropping"
    #    convert $line -crop 1x1+1+1 +repage $line
    #fi
    hue=$[ ( $RANDOM % 300 )  + 1 ]
    echo "colorizing $line to hue $hue"
    # Brightness, Saturation, Hue.
    convert $line -modulate 100,10,$hue $line
done