Getting just one of these (I mean the first and second image) would already have made my day.
We see the light playing tricks on restless water, reflected onto a textured surface. Instant abstract bliss.
The silver version looks great, like we are looking at mercury.
The golden version is even more luxurious: Auric Goldfinger would get highly excited here from this impression of a flow of liquid gold waiting to be poured into bullion.
Any of those two would be enough reward for a photographic outing.
Having both in a single sitting and even at the same spot (as shown in your "making of" image) is beyond rewarding: it is an almost unique phenomenon to have those two qualities of natural (!) light in the same spot and to able to capture it in a series of two images that are so perfectly complementary.
I am jealous (in a good way).