I wear mostly greens, browns and greys when I hike, 99% of which is in State parks where hunting isn't an issue. This is mostly in keeping with the Leave No Trace principles of not intruding on others outdoor experience.

Last week on the trail, I came across a woman wearing a fluorescent pink jacket and huge, white framed sunglasses (on a cell phone, naturally) and found it very jarring.

The exception to this, surprisingly, is at Scout camp. We are located right next to a State forest where hunting is allowed, right up to our property line. When out on the fringes of camp, I make sure to wear a red hat or jacket.