Damn fine choice with the green pants, especially with the blue and yellow of the tie. I do have to agree, though, that a more basic shirt would do well.
One of the clubs at the school I teach at held a flea market last week. I picked up this J. Press knit tie for $7. Thanks, students.
Change the square instead of the socks, as it's too close to the shirt too. But I like the overall feel.