The colored tops have to do with distinguishing between different genetic products but not all blue top or black top or red tops are the same. Just because Naps sells a high quality blue doesn't mean its the same thing your local gym source is selling. Anyone can put any color cap they want on a vial. So you have to trust your source and understand that when he tells you that his black tops are better quality, he is referring to his black tops. Not all black tops on the planet.

Next, Hyge is a brand. They don't come in black tops. They have either yellow caps on the 10iu vials or greenish caps on the 8iu vials. They are both the same quality. If you can afford hyge, they are always going to be dependable and IME, they are always better than generic colored cap GH.