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Denver Fabric has what they call a maize/yellow. Doesn't look like the colors you show, but perhaps it's just the site?
http://www.denverfabrics.com/catalog_itemdetail.aspx?ItmID=RR743
and the rest on their site:
http://www.denverfabrics.com/search/search.aspx?source=searchbox&keywords=maize+wool
Try looking for wool here. They had some Antique Gold
http://maryjos.com/store/search.aspx (http://maryjos.com/store/search.aspx)