I've become so used to wearing blue denim, I'm struggling to figure out what to wear with the new Inc gray ponte knit pants!

White or cream or black are the no brainers.

What else?

In particular, I'm looking for casual suggestions. I know these will work with a lot of my dressy blouses. I want to wear them on the plane tomorrow, and for that I'm thinking a knit top would be a lot more practical. But I'm finding myself stumped for some reason.