WINTER WEDDING ALSO IN DECEMBER

I HAVE TO QUESTIONS REALLY??!!
1) I HAVE BEEN MARRIED BEFORE SO HAS HE, SO I WAS WONDERING IF HAVING A NAVY-MIDNIGHT BLUE DRESS WOULD BE O.K.??
2) AND WHERE WOULD I FIND I WINTER CAPE TO WEAR WITH MY DRESS? I NEED SOMETHING THAT ISN`T GOING TO COST ME AND ARM AND A LEG! HAHA! I`M FROM INDIANA AND IT IS HARD FINDING THIS WHERE I LIVE , I LIVE IN A LITTLE TOWN THAT NO ONE EVER HEARS ABOUT SO THERE IS NOTHING HERE!! LOL.. IF ANYONE HAS ANY IDEAS AT ALL FOR THIS EVENT PLS E-MAIL ME
THANK YOU VERY MUCH, HEATHER