Here's how it sounds to me—my own transcription. Of course there's nothing "official" about this; others may hear it differently.


JULIE JENKINS
As sung by Frank Proffitt on "Frank Proffitt Sings Folk Songs" (Folkways Records [now Smithsonian Folkways] FA 2360, ©1962)

1. You can't wear red, my own true love.
You can't wear red, Julie Jenkins.
Oh, you can't wear red; it's the color of your head,
But I'll get me a polly-lolly, dilly-dolly, servy-to-your-double-rolly bind in the wire with my rope, Julie Jenkins.

2. You can't wear black, my own true love.
Can't wear black, Julie Jenkins.
You can't wear black; it's the color of a sack,
But I'll [etc.]

3. You can't wear purple, my own true love.
You can't wear purple, Julie Jenkins.
Oh, you can't wear purple; it's the color of a turkle,
But I'll [etc.]

4. Oh, you can't wear yeller, my own true love.
You can't wear yeller, Julie Jenkins.
You can't wear yeller; the color's so shaller,
But I'll [etc.]

5. You must, you must wear blue, my own true love.
You must wear blue, Julie Jenkins.
Oh, you must wear blue, for the color is so true,
But I'll [etc.]

[You can see the lyrics as they were printed in the liner notes of the original recording here (PDF). They are a bit different from mine, but no better, IMHO. And they leave out the whole "purple" verse!]