Help with matching sport coats

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I've never done much with sport coats, I work in a pretty causal environment, jeans and tucked in polo are common. I usually go with slacks and nice button down, tie is pretty over the top and a suit would be unheard of. Anyways, we've got some new owners that just invested in the past couple weeks and they are going to be in tomorrow and I would like to make a decent impression by throwing on a coat without a tie.

Here's the 3 coats I have that fit currently, what color slacks could I pair them with?




Third is a basic tan that I could pair with gray pants but would prefer one of these 2 as they fit better.
Thanks