If the photo had something with a soft focus in the foreground to indicate a 'Shallow Depth of Field' I would have given it another point. Perhaps if the focus on the blue square was as sharp as the red tube and the red tube was as blurred as the blue square it would have looked like a more pronounced S-DOF
I like the diagonal line here made with the objects, which makes the whole scene more dynamic and dramatic. DOF helps focus on the red cylinder, though the blue cube has the stronger position in the frame. Lighting is cool and nearly emotionless. Interesting study!
This is a good idea but too bad you didn't arrange them in order (RGB). I also think a different angle where the majority of the shot would be the red cylinder slowly fading/bluring to the next piece and then the third and final piece blurred about 70-75%. Like an extreme perspective shot where the tops of the pieces make up the vanishing point and it ends somewhere in the middle of the shot. The blue piece exhibits a minor amount of pixelation.
I'd like to see this with the camera lens a little closer to the red block to really play on the depth-of-field and throw the other two even more out of focus. Good choice in objects, though - the color and shape difference really work well with the theme in bringing one specific object to the viewer's attention.