i think if you're going to have a lot of other red accents on your car, like i'm going to (red vinyl badges, red footwells, red calipers, red LED engine bay lights), then you can definitely get away with having your engine bay painted red on the white lancer.
i'll post mine in here again so everyone else can see, but i think it works really well with the Graphite Grey. i'm also going to use red mesh when i do the improved airflow and DIY SRI mods, to give that little extra red accent.
I don't mind Nathan's airbrushing, but i personally think it's a bit too full on. I'd rather go the subtle route.