"Classic Good Looks" does not always mean "wood and blue steel". Some of the ugliest rifles to come down the pike are wood and steel. I will take a Classic or Modern Classic rifle with a synthetic stock and made of stainless steel before I'd take a blued steel rifle with a Monte Carlo. A wood finish that's subdued is prettier than one that's glossy. Still, I'm a sucker for bluing that's so deep, you fall into it.
Examples of firearms I think have classic good looks include the Remington 700 Mountain Rifle, Ruger M-77, Browning A-Bolt, Ruger No. 1, Winchester and Marlin lever actions with octagonal barrels and forend caps, Fox-Stevens 20 ga side-by-side, M1 Garand, M14 Steyr StG58, Mauser 98, 03-A3. I don't know if I'd say an AR has classic good looks, but in certain configurations, it looks good to me.
Ugly firearms include the Mosin-Nagant, AK (just about anything Russian, really) Savage bolt actions, H&R single shots, the Carcano, HiPoint, most Glenfield 22s, Iver-Johnson revolvers and Mossberg bolt action shotgun. Neither list is comprehensive.
I have a third list- Bulldog Ugly. Weapons that are as ugly-and lovable- as a Bulldog. This includes the SMLE, the Webley, the P-17 and Enfield revolvers. This list is mostly occupied by British firearms.
I don't mind synthetic stocks with good lines (unless they're made cheaply). Doodads that don't belong on a good firearm include Monte Carlo combs, white line spacers, pressed checkering, skip line checkering, California styling, high gloss wood finish, line engraving and spandex ammo carriers.
Details I like are cheek rests, rounded slim forearm, quality checkering, good recoil pad, ebony forend tip and grip cap, simplicity, 1 1/4" 1907 sling, ventilated ribs on shotguns, quick handling and good balance.
The firearm I have the hots for right now is the Remington Custom Shop 547 Classic, even with it's $1300 price tag. Prettiest 22 bolt action I've seen in a long while.
Like I said, it's complicated and I don't always understand it myself.