So is it a coolant leak or an oil leak or both? For the oil leak in that area I'd like to mention an area not mentioned - the oring on the end of the oil dipstick tube. Spray some brake clean and get it dry and powdery then park on your hill. For the coolant leak, There really should be a white trail somewhere. And as with all leaks, try to find the "highest" and most forward wet spot in the area you see the oil or coolant accumulation.

EDIT: I read your comment a few more times and it sounds like you feel it's coolant. As I said, there should be dried whitish build up where it leaking from. WP weep hole or gasket, upper and lower rad hoses and where they connect to the motor, coolant hoses going to the IAC under the throttle body, the radiator itself with the coolant blowing back on to the front of the motor.