I admire your reluctance re use of electronics to take animals. The essence of traditional bowhunting is to accept it's inherent challenges and limitations so it only seems logical to accept technological limitations as well...like the absence of batteries in the weapons. But that's a decision we each must make.
Bright fletching is eye candy, makes arrow flight enjoyable during practice and is handy for finding 'misplaced' arrows. Still, for hunting shots I think the emphasis on bright fletching and nocks (especially 'glowing' nocks) is much overrated. More important is the ability to see where the broadhead actually enters the animal.
The arrow's feather end can easily change angle or 'flip' on broadhead impact with tissue or bone, sometimes causing false reads re hit location. Point of impact is the reliable choice, which means the shooter would do better to shoot only when natural lighting is good enough to see the broadhead enter the 'spot'. Taking close shots are a huge help with this. There's a reason why legal hunting hours end before last light and the same principle applies when hunting in dark cover. The lure of bright fletching and nocks notwithstanding, being able to clearly see that spot hit is the real key.
Some believe that bright nocks help find animals. That may be so in some cases, but for the most part making a good hit (again, seeing the point of entry) and having reasonable tracking skill is far more valuable for that purpose. Unless the arrow is still embedded in the animal it won't be found where the animal eventually ends up anyway.
I wouldn't hesitate using turkey feathers for hunting, they work great. If adding fur tracers or a colored nock behind the feathers adds enjoyment or peace of mind for you then definately go for it.