Not to belabor the point, but this is duct tape we are talking about, not gaffers tape.
The Shurtape PC 600 is classified as a utility grade duct tape.
The description from Shurtape is below:
Utility Grade Duct Tapes
Our standard utility grade tapes are an economical choice for general purpose applications such as bundling, sealing, and holding. And we have a wide variety of colors for seaming, repairing or color-coding.
PC 600
http://www.shurtape.com/default.aspx?Tabid=75&Level1=39&Level2=40
Arts & Entertainment Cloth Tapes
Having acquired the Permacel line of Arts & Entertainment tapes, we stand as the leading manufacturer of gaffer's tapes for use in the motion picture, A/V, TV, photography, and book-binding industries.
PC 628
UV resistant gaffers for color coded seaming, bundling & protection
PC 660
Fluorescent vinyl-coated gaffer's tape
P- 665
Vinyl-coated gaffer's tape
P- 68
Premium grade vinyl-coated cloth tape
P- 672
Industrial grade vinyl-coated cloth tape, Waterproof, High tensile strength, ASME NQA-1 tested
P- 691
Premium grade vinyl-coated cloth tape, Waterproof, Matte finish, ASME NQA-1 tested
http://www.shurtape.com/default.aspx?Tabid=75&Level1=39&Level2=44
DeeDee is correct in saying there was no tape on her legs. What you are referring to was a transcription error. It should be lips not legs.
5 LOU SMIT: Photograph number --
6 JOHN RAMSEY: -- 149, that was like
7 (INAUDIBLE) what looks like a big piece of duct
8 tape.
That doesn't look like that tape I took off
9 JonBenet's mouth.
10 LOU SMIT: Okay. And why do you say that?
11 JOHN RAMSEY: Well, because as I recall,
12 it was black. It was like a little larger than
13 electrical tape in width. And it struck me, and as
14 I thought about it later, as the kind of tape you
15 might use in sailing to wrap around the stanchion
16 or something.
17 LOU SMIT: The black tape?
18 JOHN RAMSEY: Yeah.
19 LOU SMIT: Have you used that type of
20 tape on (INAUDIBLE)?
21 JOHN RAMSEY: No, I didn't recognize it.
22 But in this picture, it looks like a piece of duct
23 tape. A big piece of duct tape. And that's not
24 what I remember.
25 LOU SMIT: Okay. That's on photograph number --
0291
1 JOHN RAMSEY: 149. Cause it was like stuck
2 to the blanket almost in this picture.
Still lying is he?? Or another transcription error?? That transcription weasel again.