Colorizar las imágenes de un directorio

redize-css.sh

#!/bin/bash


DIR=../../it/css
for cssfile in $DIR/*.css; do
  echo $cssfile  ../css/`basename $cssfile`
  cat  $cssfile | ruby redize.rb 45 > ../css/`basename $cssfile`
done;

redize.rb

def  redize(color)
  `convert xc:#{color} -crop 1x1+0+0 -fill red -tint #{$TINT} -alpha off -depth 8 txt:- | sed  -n 's/.* \\(#.*\\)/\\1/p'  | cut -b 1-7`.strip
end

$TINT=ARGV[0] || 35

$stdin.each{ |line|

  line.gsub!( /#[0-9a-fA-F]{6}/ ){ |color|
    redize(color)
  }
  puts line
}

redize.sh

#!/bin/bash
DIR=../../it/images

for file in $DIR/*.png $DIR/*.jpg $DIR/*.gif; do
  convert  $file -fill red -tint 35 `basename $file`
done;