Is it possible to give oceans a surface texture instead of just a solid color for the whole thing?

[sinful kayak]

If the answer is no, then consider this a suggestion I guess. This would be nice since it would allow for things such as algae blooms, river deltas, rivers, lakes, etc. and basically all kinds of color variations within one same hydrosphere.

With current hydrospheres, we miss details such as these:

[pallid condor]

I think no. Shaders are locked.