DynmapForge v2.3 with the Conquest resource pack (non-installer version) creatures black water tiles.
Link to the non-installer version for MC 1.7.10: http://adf.ly/l24Lk (Sorry, I don't know an ad-free link)

Link to the texturepack skipping the ads: https://ravand.org/texturepacks/Conquest_.zip
:)
Nope. That's the wrong version. That one is not working with Dynmap for Forge 1.7.10...
@TomPiXX It's exactly the version you added though. I just took the download link after the advertisement and pasted it.
Edit: Maybe you should review your link? :P
I have the same problem.
I use: