Can the grout line be mixed to a certain darkness or lightness? Reason I am asking is because I have a light peach tile flooring and the the grout line looks really dark (close to black). I don't know its because its not completely dry or it is that dark.

After two days, the grout line still looks almost black. I guess its already dry and the colour won't lighten. It looks really horrible, peach colour tile and black grout line. Is there really black colour grout or its it just really grey?? Why can't tiler just use gray and not black.

Is it a lot of work to re-grout???

Ok, thanks everyone for input and suggestions. I will talk to tilers. At least now I know my options. If not contractors sure say this cannot that cannot everything cannot.