I'm fortunate to live where I hunt, so I typically get out 5-7 times a week during the season. During the early season it is common to see at least several deer each hunt, albeit mostly does and yearlings. By the time the pre-rut rolls around, in a typical year, I'll have enjoyed the company of dozens of (mostly antlerless) deer. My point is, I see lots of deer and they in turn have ample opportunity to see me.
I have mostly used red, red barred, orange, and natural barred feathers as my fletching of choice over the years with no issues or negative consequences as far as being picked off goes. Last year, after posing a similar question on this forum I experimented with white crest wraps and white feathers for the first time. It may be relevant to note that I use three, 5.5" banana maxis.
Hunting the same properties (and really the same deer) that I have in years past, it became apparent to me that deer do appear to notice white fletching moreso than red, orange, and natural barred fletching. Even while sitting completely motionless as just an observer, with no intent of attempting a shot - with my bow hanging on a limb or laying across my lap- more deer seemed to notice the white fletching.
This was my firsthand experience using white fletching.