This is after one day in the syrup. I had added brown sugar for the syrup (didn't have enough white sugar), so the syrup itself was pretty dark. You can see the slices gaining a bit of a brown edge.
Second day. The slices are darker and have shrunk a bit as they dry in the syrup: due to osmosis the moisture leaves the fruit and it replaced with the syrup.
Third day. Shrunk, darker slices.
I don't have a photo of the fourth day, but after the fifth day, I decided that they're done enough:
The slices have shrunk a lot and the brown sugar is everywhere. They're quite sticky now, so we're going to let them dry for a few days. After that, we'll see how they taste!