Colours show the way of the flow

I am currently preparing some images for my forthcoming exhibition at the Innovation Centre, Exeter Uni - and have been extracting stills from movies taken a few weeks back. In these, different colours of ink take up different aspects of the outward flow; sometimes forming complex arrow shapes which point the way forward.

Here is a small selection which I found today.

'Aquapool mirage'

'Arrow splits the water'

'green is always go'

'Coloured maze and hidden face'