Originally Posted by whnay.
Problem is, when you get darker it ends up looking like a suit trouser.
Originally Posted by aportnoy
Disagree with this. Yes a dark charcoal trouser may have that effect, but a mid-grey mottled flannel, in my opinion, is the perfect odd trouser.
I love medium gray trousers, but find that they don't always work with a lot of my sport coats which tend to be medium shades of brown or blue. So, I most of the time I go with dark gray or tan. But, medium gray is perfect for darker jackets.