Vogue sells whitewalls with and without the gold stripe (and also blackwalls), but when most people refer to putting Vogues on a Buick, I imagine they are usually talking about the gold stripe version. Since Vogue has been around since 1914, there could be lots of applications that should be perfectly acceptable. Since I remember my grandpa having gold stripe tires on his Caddy in the 80's, I don't think it would be fair to say a gold stripe would be period incorrect on a Reatta. His were Uniroyal Royal Seal tires, with the gold stripe in the center and the whitewall outboard; Vogues are often reverse of that...
Of course, what a judge would be looking for depends on what class you are being judged in, but here's the wheel & tire guidelines. Note that "(Mandatory deduction) " is only used in a couple places, and tire brand is not mentioned once:
i. Tires - Type Check tires for correct type (radial/ bias-ply). Radial tires were first offered as an option in 1967 on all models. One point is deducted for each tire which was not a factory authorized option for model and year.
j. Tires - Size Check tires for correct size and whitewall width for year and model. A non-authentic type tire must also receive a deduction for non-authentic tire size. If neither the standard nor alternate tire size is currently being reproduced, the next closest tire size up or down may be substituted without a deduction. A non-authentic tire size includes an obviously incorrect (more than 1/2-inch variation from factory) whitewall width. One point is deducted for each non-authentically sized tire.
k. Tires - Condition Check tire tread pattern; tires should match in pairs. Spare tire need not match any pair of tires on car, but if two spares are carried, they must match. 1 or 2 points should be deducted for excessive wear, dirt, or damage. Non-authentic tires (type or size) are not judged for condition.
l. Tire Carrier and Cover Check for correct hardware, covers and accessories for trunk, sidemount or rear spare tires.
m. Tire Valves / Stems / Caps / Covers Check for correct type for year of manufacture; valves, caps and stem covers (early years). Points should be deducted for painted stems and weights. Hubcaps and wheelcovers must match and be correct for year and model. 1932: First rubber valve stems. 1951: First plastic valve caps.
n. NonAuthentic Wheels (Mandatory deduction) Check for correct wheels and / or rims for year and model. On newer cars sport wheels may be on car, but spare may be original steel rim. Incorrect wheels result in a mandatory 10 point deduction.
o. Wheels / Trim Check condition of wheels. Points should be deducted for cracks in wood wheels, pits in metal, particularly on snap rings and steel spokes, for excessive paint chips and spalls around the rims. Beauty rings, pin striping, etc. should be correct for year and model.
[My internet connection dropped when I tried to post this 5 hours ago. I wasn't going to retype all of this, but when I relaunched my browser *POOF!* it was here!]