"condo owner" wrote in message
...
Here are more photos:

https://st.hzcdn.com/simgs/c132db930...ome-design.jpg
https://st.hzcdn.com/simgs/459226720...ome-design.jpg
https://st.hzcdn.com/simgs/140228500...ome-design.jpg

Those dont look like something spilled. They look more
like some manufacturing defect given that they are
surprisingly square or rectangular within a particular tile.

And not that likely to be the result of pressure washing either.