create_silhouettes_imagemagick

#!/bin/bash

## Convert non-transparent pixels in a PNG image to a solid color "silhouette"
## Uses imagemagick

# install imagemagick
brew update && brew install imagemagick

# convert input.png to silhouette
convert input.png -fill "cyan" -colorize 100 output.png

# convert *all* PNG files in current directory, overwriting existing files
find ./ -iname '*.png' -exec convert "{}" -fill "#990000" -colorize 100 "{}" \;

# convert *all* PNG files in current directory, save new file in output-files
mogrify -format png -path ../output-files/ -fill "#754bc3" -colorize 100 *.png