Yes, yes he is. If you're interested in what color specifically here's the full promo pic.

(click for full size)

Here's another promo pic

In addition to that here's a blog post with another pic commenting on the wearing of Chuck converse in the show. http://community.livejournal.com/daily_levi/65060.html

Also if you're interested in more info on Chuck props/locations there's a huge thread on the NBC boards http://boards.nbc.com/nbc/index.php?showtopic=836996 . Though, if you ask me I'de still answer anyway. So, yeah either ask or peruse that 9 page thread.