There might be other dealers who have one in stock, you could try calling various dealers. I got mine last month from Harris (near Boston). I do know they have other blue rambs in stock, but maybe not another 54. No harm in calling them though, maybe they can recommend other dealers to call as well in your search.
The new Rivendell Bleriots are in stock now at Rivendell- slightly less expensive only because of the type of steel used I think (doesn't effect function or looks), but they are very very nice bikes. Blue. And they have your size. Here are some pix:
http://www.cyclofiend.com/cc/2006/cc...ulton0806.html

I actually would have gotten a Bleriot instead of my Rambouillet, if they had been in stock last month.