I play with 2 friends with my own modpack and they have white and green blocks. The whole thing runs on the 1.7.10 and the mods are listed below.
Agricraft
Treecapitator
baubles
Botania
Carpenter's Blocks
Chisel
CodeChichenCore
ExAstris and Ex Nihilo
Immersive Engineering
industrial craft
MDK
Mekanism
NEI
Nuclear Craft
They're coming from Chisel
No idea what you could do about it?
Achso… If you are the owner of the server, you can of course simply say that you do not want that they use and if you are not the owner of the server then ask if they can let that
Yes, I'm the owner. And it was meant that the standard grass blocks are white and water is green ^^
Are all grass blocks white?
Yes ^^
Okay that's funny because your friends know why that is or do not know that either
No, that's why the question. I have it weird not and I logically use the same mods.
Only your friends have the problem? Then it's either due to some settings of them or their computers or shaders
One of those hats can fix, but in the other works the fix net and have actually the same good PC's.