Some initial thoughts and ideas.
1. notion of fluidity with regards to movement. dripping, drying, brushing, marking
2. colour movement: the idea of complementary colour, simultaneous constrasts, the push and pull of warm and cool hues
3. displacement of the body in time and space... could be just the displacement of form in time and space.

there is ofcourse the obvious gesture painting while my partner dances... a visual representation of movement... this might actually fit the bill... but we'll see what Lynette thinks.
the idea of using a tennis ball or some unusual object as an implement of making marks would be appropriate... possible dipped in ink.