I actually mind the crazy pattern collision less than I do the pants. That colour just doesn't work in the context of everything else there. I am not sure what would.
Friday Challenge poll is up. A very strong field of entrants this week.
Tweed for dinner? Honestly, this doesn't seem to be any different from any other daywear outfit. I'd suggest a good midnight blue suit, black shoes and a satin tie, basic evening wear. Also, I second SB advise on the darker tie.