Trivia: Near the end of the episode, Picard and Crusher walk out of the cargo bay. As the doors close behind them, you can see Tasha Yar waving to the camera from inside the bay. Her character is killed in the next episode, but this one was filmed second. The actress was waving goodbye to all of her fans. (00:42:10)
Trivia: As Clara talks with Troi, a silver colored model of a Constitution class starship with reversed nacelles is seen on the shelf behind her.
Hide and Q - S1-E10
Trivia: In this episode, as Picard talks to Riker about the Q power, he walks around his desk. As he does, a model of the Enterprise A can be seen by the wall. In later episodes, the model is of the Stargazer.
Trivia: The Star Trek: The Next Generation novel "A Herd Rain" was based on this episode. Picard and Crusher are pictured on the cover in the clothing they wore in the episode.
Trivia: As Troi talks to Picard about the language of the Harada, there's a model of the Enterprise-A behind her painted silver. The difference is that the nacelles are flat rather than in profile (straight up) to make it appear as a different ship.
Chosen answer: The uniform does indeed change colour. It may be due to the need for a green screen in part, or perhaps some lighting altering our perception. That being said, it certainly looks green at the start, blue thereafter.
The show has been done in HD now and not sure if they fix this problem.
Dan23