During a small build, a floating house, I noticed that the campfires' smoke was turning a blue color when viewed with the ocean behind. It stayed the grey color on solid blocks, however.
Environment
Running Minecraft on 2GB Ram, Intel i5 core using 1.14.4 (Latest Version) using Windows 10 on Java Edition
Thank you for your report!
We're actually already tracking this issue in MC-9553, so I resolved and linked this ticket as a duplicate.
If you would like to add a vote and any extra information to the main ticket it would be appreciated.
If you haven't already, you might like to make use of the search feature in the future to see if the issue has already been reported.