Plaid is trad, but I'm not so sure even solid colored wool won't work as well as or probably better than synthetics.
The trouble is finding things with the features I want in wool and not having to refinance my house to buy it. Shirts, jackets, or coats are fairly easy to find in places like Goodwill or the online auction sites.
Pants, especially bibs, which I prefer, are another story. I do have a pair of wool bibs, but they lack zippered legs, which makes them impossible to slip on/off over boots. So, I'm generally stuck with synthetics on the bottom, and yes, they are camo. But they are warm, cost under $60, and go on over my boots, so until someone comes up with some wool that will come close to that, I'll have to wear camo.
Yesterday, I was wearing my brown and grey plaid, Goodwill store, wool jacket, camo fleece "Radar O'Reilly" cap, Cabelas' camo bibs, no face mask or paint, and I had two doe fawns look up at me and keep right on feeding on nettles. Both under two yards from my stand. A third was 30-40 yards downwind. She was nervous because she could smell me, but she couldn't locate me since I wasn't moving. It was also about 9:00 a.m., so most of the scent was wafting up. I used no scent control! I did shower in the morning using generic Walmart unscented soap ($3.23 for a 32 oz bottle). They stayed around for about 20 minutes before they fed on out of site. I could have easily killed two of the three. Last night I had a buck about 40 yards away look at me once or twice, walk downwind, try to find the buck that snort/wheezed at him, then put is nose to the ground and head down a well used trail. Never busted me.
The point is unless they catch you moving, what you wear makes very little difference. Wear what you like, the deer probably won't care all that much. If I am warm and comfortable, I fidget less and see more deer before they see me. That is the key for me.