New Stone Type

I've been thinking about a new stone type with a color similar to limestone. I've looked at buildings like the Louvre Palace and the Notre Dame and I think that particular stone used to build them is not like any other block in the game. Mushroom blocks with a stripped surface seem the closest to the stone I envision.

I've tried building using sandstone and end stone bricks but I think the colors are too bright. Brown mushroom blocks, packed mud, and dripstone are little too dark. A new stone type whose colors are somewhere between said blocks would be good.

There should be polished and brick variants in the game, like tuff. The texture should be relatively uniform and not too noisy.