Bold dress decision

Going to a black tie do tomorrow night. Have two safe LBD's but thought I'd have a sniff around the shops anyway. Had in mind a strapless black dress with a slightly floaty skirt as a change from the very fitted dresses I already have.
Nadia came along and, with her and the sales assistants encouragement, I must have tried on about ten different dresses, none of which were black or very fitted.
I trust Nadia's opinion. I know she wouldn't let me go to this do in something that didn't suit me. The sales assistant backed her up. They said turquoise was my colour. That most people would be wearing black so I would stand out.
So I bought this dress...

Monsoon dress

...which is so completely different from anything I'd normally wear. The ribbon can be worn as a halter neck which is the option I'm taking. I've made earrings to go with it. There is no turning back.
I'm nervous and excited at the same time.