Have you ever heard of a little city by a lake called Chicago? It's in
the midwest...Google maps can probably help you. Just type
C*H*I*C*A*G*O into the text box, upper/lower case doesn't matter, but
leave out the asterisks. You might have to add "Illinois."
This is important because, in Chicago, they don't follow the NEC.
They're like hundreds and thousands of other municipalities in the
country who don't.
In Chicago, Romex is expressly verboten. (That's German for
"forbidden," Doug.) You are required to use conduit for everything in
Chicago. Everything there above a certain guage is stranded wire, too.
So you see, Doug, you can pull all manner of colors out of an outlet
Because although the CEC requires white to be neutral and green to be
ground, not all rewiring work done in Chicago is done by lisenced
(read: union) electricians. Sometimes you get some homeowner who
doesn't know much about codes, but he knows how to run a pair of
pliers, and he does his own rewiring.
And you are certainly permitted, by code, the Chicago Electrical Code,
not the NEC, which they don't follow in Chicago, to "change the color"
of a wire by covering it with tape, of the appropriate color, at ALL
switches, junctions, etc. Green can only be used for ground. But a
white wire can be "relabled" ground with simple tape, which is just
what our friend Tom H suggested he do.
So the point is, over the years, and by that I mean roughly a hundred,
give or take, all manner of wire has been used in houses. During the
time America has been wiring houses, the codes weren't always
particularly uniform. And there are still several states which have
not, and probably will not, adopt the NEC. What was code at the time,
in that locality...well...who knows...
So I'll ask again...where in Florida have you done all your work?