Minecraft blocks are green or white?

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.