How old are your fusions? Norway had some that the piece that is glued to the arrow was made incorrectly. The shop i go to had all their stock replaced from Norway with the new vanes and it has been a non issue since. I have a dozen fletched with them for 3d and they are all sticking like they...
I think is more of what you want. Black is a natural shade in nature and what they see is usually just the front slim profile anyway. I dont think it matters at all.