So after I mocked up the last colour scheme tests, although I liked them I decided they weren't bright enough for what I was trying to convey and therefore decided to go for something which was the sort of complete opposite from what I had been working with before.
These are the finalised colour schemes:
After deciding on the colour schemes I have decided to now mock them up onto the bottles to see how the flat labels should be put together:
Testing labels on the top of the bottles:
Finished top cap labels:
Mock up tests side by side: