The llines and shadows/light and dark in this image are amazing and hold interest really well. I think the background is more purple than red, so it loses impact as far as the challenge theme.
Whoa! The colors really pop off the page and grab the viewer by the lapels:-) Nice composition of objects and the hues of the magenta almost appear as a neon hue to compliment the greens of the fauna. Only real critique on the image itself is that the leaves on the far left are a tad too overexposed due to the light source being really strong on that side.