Most Helpful Girl
Usually the bride has a color combo that she has decided on.
It is best not to stand out. Most brides tell there maids what to wear.
So you might want to ask some other people what they are wearing find out what color her mother is wearing or sisters or if the grooms guys are wearing colored ties or anything like that.
Any color can stand out badly if it doesn't BLEND in with everybody else.
In a wedding you want to look nice but it is polite to BLEND IN or coordinate.
Do not wear white or off-white.
If you have no clue at all the only safe thing to do is wear a pretty black dress.
Again you can ask her what other family members are wearing and such to get some kind of idea.
Good Luck! Congratulations on being a brides maid :P It means you are closer to becoming married yourself LOL1