The basic premise is more fact than theory. Most modern folks recommend a safety piece, while that term has been morphed into UL terminology for a way to get warm in an emergency, the more traditional use has been to signal for help. In scouts we were also taught that carrying a brightly colored item was a be prepared requirement to assist SAR efforts and no good little eagle leaves the nest without something bright. The yellow rain slicker or bright orange poncho the preferred items at the time.
I still feel it makes sense to carry at least one brightly colored item, of a decent enough size that it can be seen. A shell jacket has always been my desired choice to implement that bit of safety preparation. Generally for the areas I visit- this is an item I don't have to wear all the time, so it's color is not a constant visual offense, but I do have to carry it anyway so it is always available.
As mentioned- besides being a health hazard, most areas east of the Miss. legally require you to wear blaze orange during hunting season.
After that- either spend the dough to buy the colors you want, or reap the benefits when this season's banana sawgrass is discontinued for next seasons meadow sunrise.
No different than 10 years ago when the hot colors were Spruce, Hunter, Pine, Vine, Lichen or Moss (green) or the infinite varieties of Khaki- all popular with the North Face wearing outdoor looking towns-folk of the time.
If current trends have ruined your day, comfort yourself in the fact that in a few seasons your favorite color palette will be back and some poor Ultrarunner will be lamenting the lack of colors extreme enough to support their outdoor assaults.