The different colours for different flavours. Chocolate, Chocolate Mint and Chocolate Orange are the ones I can remember.
A Google search suggests that you can get hold of a product called Ice Magic but it's bloody dear and critically, comes in a boring bottle with a flip top lid.
Bird's Ice magic also had a very cool advert for a kid. The 80's were mainly crappy but there were a few stand out stars.
Yeah, I know that it wasn't the perfect item to live in the cold North West with. But, you could always run it under the hot tap to get it out of the bottle ;-)