In Bedrock Edition the new biomes in the Nether use different colors of water compared to what the same biomes in Java Edition do, with the forests and the soul sand valley using a red tint on Bedrock whereas Java uses the default blue, resulting in a parity issue (which is valid due to these biomes being added after Buzzy Bees).
It is also worth noting that, while not the focus of this ticket or exactly a valid parity issue, there are also a large amount of other unique biome colours in Bedrock Edition which could be ported to Java Edition in parity interests, which can be viewed here: https://minecraft.gamepedia.com/Water#Bedrock_Edition
The blue waters can be seen legitimately in Java Edition through cauldrons (water cauldrons in Bedrock Edition are currently glitched).
Valid parity issue. Probably will be a new feature in another update though. I can confirm this for the developers to look into in a future release.