I use flo yellow magnocks and 3 black vanes.
The reason I have the 3 black vanes is I brought 100 flo yellow and 100 black fletched up my arrows with 2 yellow and 1 black. When I went and started a practice session every yellow vane flew off but the black stayed in tact so I just came home and refletched to all black because I am not going to go out and buy more vanes untill I have used all these ones.
I did get in touch with the people I brought them off and they passed me to the manufracturer so when I contacted them they told me to go to the people I brought them off.

Neither company has offered to replace them or give me my money back.

So when I have run out of the black I will be looking for other brands on vanes and will hopefully get better service than I have got.

I do tell every one in my group at the start why my arrows are fletched the way they are.
Call me a cheat if you want but be prepared for a come back