Our association in Arkansas notes there are two different black pants...
1) All Weather, and
2) a Heavier/Thicker, Cold Weather pant
on the market. They allow us to wear short sleeve shirts with the All Weather slack style pant, and must wear long sleeves with the Foul/Cold weather pant.
My personal opinion, is they should come out with the white pant with black stripe like the NFL wears for NFHS, and College officials to replace those old school, uncomfortable polyester knickers. Sorry if I offend anyone with a deep affection of those pants, but styles change, and so should the officials. I don't understand the argument that guys not wanting to spend money for another style of pants. That would be like hiring a carpenter to do a remodel job, and he shows up with a screwdriver, and says he didn't want to buy hammers, and other tools. I do understand tradition, and it has its merit. A mixture of the styles would be welcomed.
Baseball umpires no longer use the balloon chest protector, and nobody questions their professional appearance.
I like the comfort of the black pants, and would wear them every night. On our crew it is not even a discussion.