Other than looking pretty neat and being fascinating to watch there aren't all that many practical uses for ferrofluid. A mixture of oil and iron particles that can be manipulated using magnets. Ferrofluid does however make for some pretty neat desktop ornaments and it also just so happens to be pretty fun to film. But what happens when you drop a little a bit of colour into the mix?
Typically a dark black substance adding colour to ferrofluid doesn't make it look any less menacing as it shifts and changes shape - if anything it makes it look even more intimidating, as shown in these fascinating experiments from YouTube’s Chemical bouillon. We don't know about you but we could watch this stuff for hours.