Originally Posted by TM79
They're part of a suit, and I don't think they'd look good at all if you just threw a solid shirt on and went to work that way.
Typically, trying to pull off half of a suit will not look good.
With patterned pants like this, I think you're mistaken. They could very easily work as a pair of odd trousers with a more sedate jacket (Pitti-esque, but acceptable) or without a jacket in most of the civilized Western world. You're not going to reach Sartorial Transcendence with them, but it's not because Banana Republic dictated that they're half a suit.
To the OP – those are fine for most any office environment in America. I would recommend investing in a pair of plain grey slacks instead, but if you like them and they're going to make you happy, there's no faux pas you're committing there.