The Meaning of Life, the Universe, and Everything.
if your trying to generate it using the .Schemeatic to .Java convertor but the stained clay isnt showing in the code, use something that was in 1.3.2 like wool or something else, then in the code replace it to the block that you want..
This isn't related to stained clay, but you may find it useful for your custom structures. I made a tool that, if you store your structures in array format, will allow you to easily rotate their orientation in the world on generation or offset the position by an amount.
Check it out on github. Might make some of your work easier