Hi -
At least one of the sets of shadow styles I have are Krystal Hartley's Lighten Up Shadow Styles. This is where she has a download link for them.
http://scraphappinessinside.blogspot...s-shadows.html
The ones I use most are Trish Shadow Styles, but I can't find the source. I don't think I paid for them (i.e. - they were a free download within the last couple of years), but when I google search I can't find them. Maybe someone else knows?