Natural iron oxide pigments are available and these can be added to match tile color. Combine the sand and Portland cement in a tub. Slowly add water, stirring as you go, until the texture is like thick sludge. Add the pigment bit by bit, until the desired color is reached. Lay the mudset.
More sand is used for wider gaps.
Portland cement Sand Water Natural earth pigment Combine the Portland cement and sand in a tub. Slowly add water, stirring as you go, until the texture is like thick sludge. Add the pigment bit by bit, until the desired color has been reached. Step Three Damp-cure grout to avoid chemical dryers. I like to damp-cure tile by wetting my fingers and rubbing them up and down the grooves.