It sounds like Trent Williams' injured knee is in pretty good shape. While he did not practice today, he is expected to practice tomorrow, according to Mike Shanahan. It's probably too early to know whether he will play on Sunday (and he'll be listed as "questionable" anyway), but if he's able to practice tomorrow, that's obviously a good sign for his chances of playing against the Colts.
Meanwhile, right tackle Jammal Brown, who also injured his knee, did go through a full practice today.