A representative came around today to check out the tile with the wrong coloured grout on the newly tiled basement floors. It's white, and is supposed to be dark brown. She confirmed that the problem is caused by crystals that are produced when too much water is used to wash the grout off of the tiles after it is applied. She did a spot check and luckily a diluted acid removed the crystals, leaving the grout in the colour I wanted, so they won't have to rip anything out and replace it. No word on when they'll be around to do the cleaning, though.
In other news, I was told today that my couch will be arriving ahead of schedule. It should be here by the end of January... whether the basement will be ready for it remains to be seen.