I'm not exactly sure to understand.
We didn't submit anything else than what is here.
We worked on it during the jam but the quality of the work and ideas that inspired it varied with every day, which is why it may be inconsistent. I'm not sure how much I will update this project in the future, because for now I still have a lot of work on my game and not much time available in my days to work on it. Maybe if I end up doing more work on this spritesheet I will update the project page with an updated version when I'm done working on it.
When it comes to the water, the lighter tiles at the top represent ice (with light reflection on them) and under is clear water where the sun shines more easily and the cold affects it more. The darker tiles represent deeper water where light doesn't goes through well and that is less affected by surface cold, yes.