Hmmph, do a taste test.... no no just kidding.
Well it doesn't look like oil, coolant, or gasoline, does it smell like gasoline? it looks like its just water too me. Throw your car in the air and see if there is anything fishy going on.
If you were running so rich you were spewing out Hc's out of the tail pipe, your cat would clog, melt and smell like ****, and you would smell gas.