1. Yeah it will still change as any creature in the game. When
, it will be a purplish shiny colour, and when it is
it is covered in awesome spikes, its skin is cracked and it has blood-shot eyes (looks brilliant)
2. Depending on the creature that you have replaced it with, it will im afraid turn back to that creature when you play BotG because the expansion cannot detect that you have the turtle on B&W2. However, you could put the turtle files in place of the creature files in the BotG creature folder if you are bothered.
3. The game remains completely unchanged while you have the turtle and after you uninstall it. It should harm the game in no way and in my experience and the experience of many others, it will have no "weird" effects at all. Even if it does cause an error, the installers back up the creature files so when you uninstall the turtle, all apparent problems will be deleted. all in all, there will be no problems and if any should occur, they will be removed with ease.
Glad i could help. Anyone else who needs assistance just post ![Stick out tongue [:P]](/emoticons/emotion-4.gif)
SkelApe