I’m playing around with jQuery UI themes. I need to get icon packs, and it’s a long process to set the colors in themeroller, download the entire theme, extract the icons from the zip file, and put them in the site. wget to the rescue.
COLOR="000000"
wget -O "ui-icons_${COLOR}_256x240.png" "http://jqueryui.com/themeroller/images/?new=${COLOR}&w=256&h=240&f=png&fltr[]=rcd|256&fltr[]=mask|icons/icons.png"