Grout issue

[tomredsky]

Hi,
We recently had these floor tiles laid and I am trying work out what's wrong with the grout. I hope it's clear from the picture, the grout is beige but some parts look grey and I suspect the grey is the cement. Beside getting the tiler back (I expect that would be fruitless), what is the remedy? Remove as much material as I can and re-grout?
Thanks in advance.

 

[Wayners]

Grout is completely different colour.
Not a spill that needs washing off? That's what it looks like.
Soda and vinegar or escalate to to grout cleaner if soap and water don't work

 

[stevie888]

Is it grout or an excess of adhesive?

 

[tomredsky]

I tried the soda and vinegar. I did it twice on a small section to be sure but that made no difference.

>Is it grout or an excess of adhesive?
I don't know.

It didn't starting out looking like. The tiles were laid about 3 months ago. No one recalls spilling anything on them either.
There's a couple of close ups in case there are clues.

 

[Wayners]

Looks like something has spilt.
Try a grout cleaner.
If that fails regrout

 

[johnny2007]

Light coloured grout on floor tiles must be avoided at all costs.
Years ago a customer insisted on having beige grout on kitchen floor tiles.
I sent her an email confirming that it would get stained and it wasn't covered under my warranty.
A few months later she called me because...the grout was stained!
She ended up paying again to have it all removed and replaced with dark brown.

 

[Cheslea2010]

Looks like dirt from where mop water has dried. Small wire brush and neat floor cleaner should be tried first to elimate it being surface muck.

 

[opps]

Looks like something has spilt.

1000113047.jpg​

Indeed it looks like hairline cracks have developed along the length of the tiles. That might mean that the tiles are moving slightly. It might be a trick of the light. Before doing anything, I would investigate further.