If it is "glowing", you have a problem. Most companies want their product to "get your attention", therefore, they will add brighteners to set the color and make it look great to their potential buyers. I recently purchased camouflage from a very large company that produces camouflage in the U.S.A and, to my surprise, it was made in Pakistan. When I tested it, it glowed like the sun in places and it would have made me glow like a blue light bulb in the field. I have found that the thread looks red 60% of time when using a black light. That is not a problem but thought I would share that.