a red shirt or black tie, it can be any color shirt, but make sure the tie has atleast some black if not all of it is black.
white, green, pink, red, orange any color but black/gray would work
what colors should i use on my eye shadow if I'm wearing a green dress?
Match just the tie and vest, or match the shirt. You can never go wrong with a black tux, but, because champagne is neutral, you have options. If possible, try to match the fabric as well as the color.
A black or white
purple, white, yellow, blue, pink?
wear red satin shirt wit same colour tie
Scarlet Red tie and white shirt. Or. Black tie and white shirt. Or. White tie and dark blue shirt. Or. Electric blue tie and black shirt.
Your shoes should match your belt. I would go with black.
grey tie Black pretty much goes with any color, so I would find out if your date will have any accent colors that she is planning to use, such as gold jewelry or a silver necklace and match accordingly.
white shoes, black shoes,and possibly yellow depending on the shade of purple
Black, white, a darker or lighter shade of grey,
Graphic ties and colorful tie which have bold patterns or colors pops against the black