Vango Palena 600DLX tent

[Mummyonline2]

Hi all,
We've had our tent since last year and love it! Problem is, it's not really big enough for all of us and our stuff (we don't travel light!) but I can't find the Palena extension/canopy for sale anywhere now as it's a 2013 model. Vango haven't been much help & the only canopy they now sell that will fit it is in another colour. Does anyone have either a Palena canopy that they no longer use and would be willing to part with or any advice for what to do next? We were complete camping novices before buying this tent!
Thanks :-)