It comes down to what the TRIM Tag shows... the exterior/interior color is listed on the tag.
I started the
L81 Vette Registry about 14 years ago or so. We wanted to provide a data base and historical record for the 1981 Corvette. Thru the years different members and folks have done the administration of the site for me. My biggest desire was to provide an accurate data base for our year Corvette.
It is unfortunate that some folks find it insulting to question the authenticity or the data they provide us. WHEN it is a simple matter of just checking the TRIM TAG to validate their claim. Over the course of time we have existed as a Registry we have "Confirmed" the existence of
ONE PRIMRY 1981 and worked with Mike A. of the infamous Corvette Black Book to document it.
Since I have taken over the approval of registrations I find many time colors to be wrong as per the VIN or folks that think I know nothing and because they have an orange 1981 it must be a one of a kind... well it probably is but without being a
"SPEC" on the TRIM TAG, there is VERY LITTLE chance of it being factory or dealer painted color.. end of discussion!!!!
And don't get me started on the Code 24 1981's,,, prior registration approval indicate more than 1 Code 24 :eyerole yet NONE are truly documented!!!! and owners ignore request to provide photo of the TRIM TAG

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So my point is unless someone can document beyond any shadow of a doubt... enjoy the orange one of kind or one of a kind purple 1981 and with this ole boy approving registration for our Registry.... it ain't going to happen..
by the way MY 1981 is a DOCUMENTED 1 or 315 and truth be know probably a lot lower production number if I could document all the options.. UL5 Delete, manual door locks, manual seats, rear window defog, oh and a 4-speed 84L with silver leather interior... and yes I have the build sheet, original window sticker with all delivered documents upon dealer prep thru first, second owners and every part replaced and receipts for all maintenance and parts.. as well as everything I have done... I have all the hard copies and an Excel Spreedsheet with 14 pages or records...
Bottom line document it provide proof and most of all ENJOY THE
Bud