I just pulled my toilet tonight because there has been blue staining around the acryic caulk I put around the toilet. I did leave the rear uncaulked just so I could see if there was a leak but this leak is very very small. It's been set and leaking for one month. and has yet to puddle anywhere. I couldn't explain why the water leaking was blue because we don't use anything blue in the bowl. After turning the bowl over I immediatly noticed blue streaking coming from the deep recess where the bowl wash path is. When I ran my finger across it, it was wet. I can't see a crack or anything but seeing the blue water streaks from there definatly tells me it's not the wax ring. What do you think it can be from looking at these photos?