The bug
The ambient fog color underwater does not match the new colors of the water blocks themselves. The underwater fog is much brighter and more saturated compared to the color of the water blocks.
Attachments
Comments 7
Seems to affect 1.13-pre6
Affects 1.13-pre7
Still affecting the full release of 1.13
Still in 1.16rc1
In 1.16.4 and 20w46a
Blocked by [MC-218597]
The water colours not working is most probably caused by a bug: MC-130430 . The water fog colours ares still working, thus the discrepancy between the two.
Otherwise water / fog / biome colours see MC-128455