I have observed something and seek an opinion. I have flown about 80 basically trouble free hours on this plane. About 10 hours ago I noticed some blue on the back bottom edge of my cowl between the exhaust pipes. There wasn't much, and it was wet with oil, as that is where any oil seepage ends up. I wiped it down, checked for leaks (ran the pump, ran the primer, ran the engine) and found nothing. Decided to monitor the situation. Today I saw the blue again, so I decided to pull the cowl. Found some sticky blue under my air box around the drain hole. The pictures tell the rest of the story. My gut tells me this is not a big concern, and probably just buildup of the leakage that happens every time I move the throttle 1/2" before starting the plane. But to be safe I figured I would get the collective opinion.