The Technique is very simple..
I took water in a bowl, and just dropped (?) slowly with syringe or with the
faucet [(British) tap ; (slang) unforeseen hitch, stumbling block].
I covered the flash with green Cellophane..and started shooting..![]()
It is better to use fast shutter speed..
You can put a colored paper or a magazine for the colors..that's what I did..
I tried also with oil and other liquids..