you should wear a tank top of any colour depending on the colour of the sweater.
I wore a blue t shirt
They wore a red shirt
Gray.
White!
blue
Yes, Thats medium contrast men, You can wear white shirt and black tie with black belt and shoe. Or wear any colour that wil be cool with your suite and then compliment it with off colour tie.
a very light shirt but without the jacket. wear a cardigan instead.
It depends on the colour of your shoes.
white
It depends on the colour of the stripe.
white it goes with everything