I can see the red cast but would have put it down to the lighting/time of day. Unfortunately all screening is subjective - what one passes another will reject. In fact I just recently had one rejected by both - one said it was soft the other said it was the wrong/missing category, no mention of softness.
If you have photoshop open the image and select Image>adjustments>Hue/Saturation
In the Edit drop down select Reds and play with the sliders until the red cast reduces. The only problem, however is that you will start to lose the red trim on the aircraft. Try selecting this trim and inversing the select so that you're working on everything but that. Hope this makes sense
