welcome to FBBO
that's a totally loaded question
(you asked,
personally I'm not a huge fan of the dull yellows myself)
I had a 69
piss yellow
I've had 13 68-70 RR's now
BUT;
it's your car, your $$$, you doing the work (?)
do what makes you happy
what others think isn't important
unless;
you're doing it for a flip, or to be 100% correct OE
&/or for resale, to the masses
non org., engine, trans, paint, rear, interior etc.
even wrong style hardware or wheels, tires choices
all can affect price
some by 25% or more, depending on the car
a 383 car is a base car pretty-much
or if it was a high impact color, it will hurt the price too
if it was an A12 or a Hemi car, that'd be a totally different discussion
IMHFO
now days, a good Day 2 & Resto-Mods/Pro-Touring done well,
with good, quality parts & professional appearing craftsmanship
sell for just about as much,
if not more, in many cases
have fun, that's what it's all about
good luck