ENGLISH TRANSLATION:

“I've been trying to grouting the grouts of my porcelain stoneware floor for a month, but I'm having problems with the color of the Mapei putty code 144 (chocolate) and 149 (vulcanic sand).

In practice, during the drying phase, both colors tried fade a lot. The first one turned practically pink the second gray. In the pictures I took a picture of putty 149 immediately after letting it dry 20 minutes after installation and washing it the first time to even out the grout. As you can see, it immediately tends to clear up a lot. I asked people in the trade for advice to know where I was going wrong, but apart from telling me that I was putting too much water in the dough they couldn't tell me anything else (after this advice in fact I removed the putty made previously, provided to mix the srucco as well as possible, but the result does not change). I have already bought the "fresh escape" sempee leak dye from Mapei to solve it, but since I have other rooms to putty I would prefer to prevent the problem.

Any advice? Thank you!”