An Unlikely Canvas

Two shapes in continuous motion
Changed in dimension
From flat to deep and flat once more
As they traveled in flux
Square to box to square
Circle to cylinder to circle
Teardrop to heart to tear
Moving faster than the shapes
Two colors raced in primary shades
From blue to red and blue again
When the motion ceased
The colors bled unnaturally
Onto an unlikely canvas
Creating a pool over the tiles