Many years ago, a bunch of fans did a set of colour covers specifically for Cancelled Comic Cavalcade. Not for profit but purely as a hobby. There was even an old website which carried some of them. It was all terribly unofficial, and I can't even remember the guy who sent me the scans after so many years.
There's a set of 21 - basically two main colour covers, which match the covers done for the bound volumes, and nineteen more individual covers which match the artwork from Cancelled Comic Cavalcade exactly but as colour comic covers as a set, although one of them was a cancelled Hellblazer comic that somehow got itself included in the set, even though it was cancelled many many years later.
This has nothing to do with me, but I obtained them and kept them for years.
All the artwork, every piece of it, is authentic DC that got cancelled..
Anyone interested in me posting them up here
Just curious.