If you cannot find the exact or close to color, I would look for a contrasting color. Also, if there are different colors in the dress, you could look for one of those colors as well.
I would wear the exact same color or a nude color would go nice as well.
A dress should be below the knee to be considered formal. Also, the dress should be a solid color such as navy blue, black, tan or brown.
I say you should wear brown. I personaly think brown looks great with brown if you think about it.
It depends on the beading but I would probably do gold.
brown and black
PINK!!!!
Gold jewelry or natural wood tones. How about pearls?
Black "dress" shoes goes with any color suits/sportcoats. Brown "dress" shoes goes well with suits/sportcoats that are in any shades/tones of brown or white.
I would try pairing a chocolate brown dress with lemon yellow hued kitten heels.
neon dark blue
White
white, light brown
she had brown hair and gold highlights