Invisible Glowing Graffiti with two colors: Red and Green

This is some invisible UV glowing paint I made recently. It’s a clear paint that glows brightly under UV lights. There are many reasons I can think of to  can be used to add invisible messages without obscuring preexisting signs or creating visual clutter. Also some fun uses could be to create city wide treasure hunts or secrete messages. The ink comes in two versions a plastic based version that you can screen print and a polyurethane version that you can spray. Here’s what the wall looks like during the day:

Wall with two skull tags imitating wall without tags

At night here’s a picture of it glowing with a UV LED flashlight:

You can see it using UV LED's as well!

The applications are endless, what would you do with this type of ink?
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