Deer can see blue, so be careful for that.
Deer cannot see blue, the spectrum UV’s of items appears “blue”. So if you wear clothing that reflects certain spectrums of light, you appear as a blue blob to them. This is from Texas A&M studies of the past. Supposedly the spectrum from blaze orange is close to foilage.
I think synthetic materials initially reflect the eye grabbing spectrums because you see deer looking up at hunters way more than the old days.
Its possible the deer blew in the sense of gasping or exhausting air, highly unlikely it were the typical type of warning or discovery blow.
I’ve killed hundreds of deer with blue jeans on but now I mostly wear Khaki Wranglers with a camo (darker top) to break my outline up better. I lay them in the sun for two weeks in the summer and wash them only with hunting detergent.
