Does infra-red or Ultra-Violet paint exist?

Factual Questions
21

Here’s an example of what sunscreen looks like when photographed using visible vs UV light-sensitive cameras:
http://zidbits.com/2011/07/how-does-sunscreen-work/sunscreen-uv-example/

The answer to the general question here is yes; all you need to be able to implement this idea is a pigments and/or dyes that reflect or absorb specific, probably narrow, bands of light. And these already exist for visible and UV/IR bands, because they’re useful in making lens filters, etc.

22

Apparently some black markers will show up in IR even on a black background. And a similar effect can be created with light filters that look black but let IR pass through.

http://amasci.com/amateur/irgoggl.html