After an inspection of the hives today the blue band on my gloves had 6 or 7 stings & sacs still stuck there.
On BeeL some years back was a discussion about writst watches and bee stings. Many who wrote in said they experienced more stings in the area around their wrist watches. My first reaction after reading that was "Now come on!!! What nonsense!!!" Later after I started paying attention, in my case at least, it did seem that I was stung more often around my watch. I now take it off when examining a hive.
Maybe, the blue band on your gloves contrasted with your other clothing and the bees were drawn to that.