Legacy Console Edition used water colors from Bedrock Edition, not Java Edition. The Environmental Water pack I released repackages these colors in the OptiFine/Colormatic format, but it is not ideal because you have to use a lookup table to match biome ID to name.

You could look in the Console Aspects Updated Textures biomes_client, which stores each biome water color in hex, but Bedrock uses old (pre-1.13) biome names, so there may be slight confusion (for example, "mega_taiga" is now "old_growth_pine_taiga" on Java).

This one might be important since BedrockWaters (which also had water colors) is known to have issues with resources reloading from the start. Hopefully, implementing this to the mod will not have the same issue.

Added in 1.3