Weddingbee boards

I'm having a MOH and a FG only and I'm letting the MOH pick her own dress and I pick the color. 

This dress:

is one of her top choices (from Alfred Angelo).  Now I'm having serious thoughts about the sash on this dress, if she picks it.  It's my fave dress that I've seen but I'm not sure about the sash.  What are your thoughts of the sash in the same color as the dress, a different shade of the same color or in an accent color?  For what it's worth our color is blue (some kind of deep, bright blue) and our accent is orange.  I'm not really sure I'm wild about the sash in tangelo, since that's the only color that's very close to orange. 

Also, which of the following colors do you think would look the best with orange flowers to match?

Indigo

Cobalt

Marine Blue

Meditarranean Blue

My original thought was cobalt BUT...MOG is wearing royal blue and I don't have the swatch so I'm afraid darker blues might be a little bit too matchy.  She got the dress right after we got engaged and checked with me after so I wasn't going to say no about it.  We had actually crazily entertained the idea of changing our color, which is stupid.  FI likes the marine blue with the orange flowers the best and while I really liked the cobalt at first, I could easily envision marine blue or indigo now.

My thought for the moment is to have MOH try on one in each color (regardless of style) to see how the individual colors look on her.