I'm making the Scarlett O'Hara green curtain dress, from a copy of the original pattern.  I have the muslin done, but haven't moved forward with the real thing yet because I can't seem to find the fabric that the pattern calls for.  I'm looking for:

Moss Green Cotton Velveteen

Olive Green Cotton Velveteen

When searching on the Internet, you dont' really get any usable results for "Cotton Velveteen" - is there something comparable to that?  I'm guessing that cotton velveteen is lighter than normal velvet, and that would be important for this garment, because even the muslin mockup is pretty heavy.

I'd appreciate some guidance if anyone has any.