You have a very good point.
I never intended camo and only have 2 pieces of clothing in it.

Still most of my gear is mouse grey, drab green, tan or soft black.
Whenever it is near hunting season I turn bright fluorescent orange.

I have been thinking of starting to purchase replacement gear in brighter colours like Sunshine Yellow and other hues that stand out well in the woods.

My packs will still likely stay subdued, and not just so they are easy to cache if I have to, but because Cordura in black is the standard and most resistant to UV degradation.

Edit:
Another problem is that I just find really bright colours hard on my own eyes.