[Diamond]

Of course, if it's something like a turtle's back, then my answer is obviously incorrect for purposes of this test.

Cordially,

[PatrickHenry]

Of course, if it's something like a turtle's back ...

It's the latest in bathroom design, called "turtle's back" pattern. Very stylish. And that yellow color can hide a multitude of sins, if you know what I mean.

[CCWoody]

It looks like the "skin" of a plant to me. But, hey, I'm just lurking with the probability of attracting random attacks.