Trivia: The Federation flag has the Roman numeral MMCLXI, which is 2161, the year that the United Federation of Planets was founded. It's motto, "Ex axtris scientia" is latin for "from the stars, knowledge."
Trivia: Because of guest star Leonard Nimoy's schedule, this episode was filmed before part one.
Trivia: The actor that plays young Batai, son of Kamin/Picard, is played by Daniel Stewart, the real life son of Patrick Stewart.
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