[cyncooper]

but she described the one found on the necklace as dull orange.

Only when cataloguing evidence---before the fiber was cleaned. The fiber turned out to be the same bright orange as the others.

You are correct, there were a couple other orange fibers that did not match at other places--one was wool, I believe.

[UCANSEE2]

The fiber turned out to be the same bright orange as the others.

What are these BRIGHT ORANGE fibers from ?