Chrome urethane laces
It's very dificult to photograph "chrome" as it's not a color it's a specular reflective highlight. Hopefully though, you can get an idea what the stuff looks like from these pictures.
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More
Here's a shot of the stuff coiled up to give you a better idea of how reflective the stuff is.
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For comparison
Here's the chrome lace in the middle, with clear lace and a real metall/plastic USB cable for comparison.
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Zoomed in
Here's a closeup of the chrome lace. You should be able to get an idea of the specular highlights here.