The Outcast - S5-E17
Deanna Troi: All right. This hand, the game is "Federation Day."
Worf: What is that?
Troi: Well, the Federation was founded in 2161. So...twos, sixes, and aces are wild.
Worf: That is a woman's game.
Troi: Oh? Why's that?
Worf: All those wild cards. They support a weak hand. A man's game has no wild cards.
Beverly Crusher: Let me get this straight. You're saying it's a woman's game because women are weak and need more help?
Worf: Yes.
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