I have three feature requests for the Visuals section of Biome Configs.

The first is about WaterColor: would it be possible to change disable it as a multiplier like GrassColor and FoliageColor and instead as a setting? Or perhaps, change the mode of multiplication (such as a blend).

The second is similar to #387 and is about fog settings. World fog color can be controlled from the WorldConfig, but this setting cannot be controlled per biome. My proposal is for more fog controllers per biome.

The last is about Foliage Color. Foliage Color affects the colors of Oak, Jungle, Acacia, and Dark Oak leaves, but not Birch or Spruce. This tells me something might be hard-coded about these blocks, but could that be changed? And, if not, what about separate toggles for the different leaves? I know this might be more trouble than it's worth (with how foliage/grass colors work), but it would be a nice addition.

If any of these features are accessible, then I'm sorry for wasting the time spent. Otherwise, I think these are small, little features that would help dress up biomes a bit more.