Here's curcumin dissolved in a hydrocarbon called xylene with ultraviolet light shining on it! It's fluorescent. You can also dissolve it in ethanol, e.g. vodka.

Curcurmin also makes a good pH detector: if you mix it with a base it turns red. This video by @compoundchem illustrates it:

https://www.youtube.com/watch?v=PsVtME5o69I

(3/n, n = 3)