Have I ever seen it ??
see this site
http://vu.morrissey-solo.com/moz/perez/info/superman-whatever-happened1walmart.htm?
http://abc.go.com/primetime/pushingdaisies/?pn=comic
Wildstorm FX are listed as colourist on the second page & in the indicia you can just make out a line about wildstorm being a trademark of dc comics
that's great! at least you know it exists.
i would like to know more about promotional comics. could you tell me some more so i can get familiar with them.