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[Paknaloid]

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Edited January 4, 2018 by Paknaloid

[BrickbyBrickTechnic]

They are most likely custom stickers. Maybe you could leave a comment on the video asking this question and the creator will reply? 

[Paknaloid]

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Edited January 4, 2018 by Paknaloid

[BrickbyBrickTechnic]

Just now, Paknaloid said:

figured they were stickers but just want to make sure I'm not missing an obvious piece that would work to recreate the look

If it was a piece, I wouldn't have heard of it either

[Jurss]

You can use some tape or other self sticking material (some foil) in white, which is cuttted in necesary shape.

[Paknaloid]

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Edited January 4, 2018 by Paknaloid

[BrickbyBrickTechnic]

I contacted a fellow builder who claims that the builder told them that the material is glow-in-the-dark tape.

[Paknaloid]

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Edited January 4, 2018 by Paknaloid

[The Brick Wall]

Hi, I have used a glow in the dark tape from a craft store. It is so sticky so I decided to keep it on. Thank you for asking.