I've had a little google....
http://www.additionsdirect.co.uk/rf/add/p.do/women/bridalwear/rosalind-bridesmaid-dress?Nao=12&groupId=639804026&Nu=this_product&SNtk=&Np=1&SN=151+4294484384&Ntt=639804026&D=639804026&Ntk=group_search&Dx=mode%2bmatchall&thisprod=639804026&N=151+4294484384&Nty=1&Mis_item_id=15&Mis_item_loc_id=1&product=639804026&pageSize=12
I love this, i may have to buy this for myself! - Silver
http://www.additionsdirect.co.uk/rf/add/p.do/women/bridalwear/ella-bridesmaid-skirt?Nao=24&groupId=639796100&Nu=this_product&SNtk=&Np=1&SN=151+4294484384&Ntt=639796100&D=639796100&Ntk=group_search&Dx=mode%2bmatchall&thisprod=639796100&N=151+4294484384&Nty=1&Mis_item_id=15&Mis_item_loc_id=1&product=639796100&pageSize=12
Short version in Midnight blue
http://www.additionsdirect.co.uk/rf/add/p.do/women/bridalwear/ella-bridesmaid-bodice?Nao=36&groupId=639811626&Nu=this_product&SNtk=&Np=1&SN=151+4294484384&Ntt=639811626&D=639811626&Ntk=group_search&Dx=mode%2bmatchall&thisprod=639811626&N=151+4294484384&Nty=1&Mis_item_id=15&Mis_item_loc_id=1&product=639811626&gallery=Y&pageSize=12
The top available in midnight blue
http://www.additionsdirect.co.uk/rf/add/p.do/women/bridalwear/ella-bridesmaid-long-skirt?Nao=36&groupId=639801303&Nu=this_product&SNtk=&Np=1&SN=151+4294484384&Ntt=639801303&D=639801303&Ntk=group_search&Dx=mode%2bmatchall&thisprod=639801303&N=151+4294484384&Nty=1&Mis_item_id=15&Mis_item_loc_id=1&product=639801303&gallery=Y&pageSize=12
The long skirt available in midnight blue
http://www.additionsdirect.co.uk/rf/add/p.do/women/dresses/party-going-out/embellished-silk-dress?Nao=12&groupId=643478115&Nu=this_product&SNtk=&Np=1&SN=151+4294484651+85+4294485523&Ntt=643478115&D=643478115&Ntk=group_search&Dx=mode%2bmatchall&thisprod=643478115&N=151+4294484651+85+4294485523&Nty=1&Mis_item_id=15&Mis_item_loc_id=1&product=643478115&pageSize=12
Navy dress
http://www.additionsdirect.co.uk/rf/add/p.do/women/dresses/party-going-out/wrap-front-sash-dress?Nao=108&groupId=645873820&Nu=this_product&SNtk=&Np=1&SN=151+4294484651+85+4294485523&Ntt=645873820&D=645873820&Ntk=group_search&Dx=mode%2bmatchall&thisprod=645873820&N=151+4294484651+85+4294485523&Nty=1&Mis_item_id=15&Mis_item_loc_id=1&product=645873820&pageSize=12
Cheap and blue
http://www.additionsdirect.co.uk/rf/add/p.do/women/dresses/party-going-out/little-black-occasion-dress?Nao=144&groupId=627770041&Nu=this_product&SNtk=&Np=1&SN=151+4294484651+85+4294485523&Ntt=627770041&D=627770041&Ntk=group_search&Dx=mode%2bmatchall&thisprod=627770041&N=151+4294484651+85+4294485523&Nty=1&Mis_item_id=15&Mis_item_loc_id=1&product=627770041&pageSize=12
LBD
This is just from the one catalogue. HTH or at least gives you an idea. Could the lady who was originally making the dresses make a little wrap to go with the dresses? They'll need it in Feb, then you can bring the original colour scheme back in with those. Surely they're pretty easy to make!