Comes in all colors

https://www.hometalk.com/1060580/ployblend-grout-renew-an-affordable-easy-way-to-update-your-grout-color

Ployblend Grout Renew - An Affordable, Easy Way to Update Grout Color

here is more info

https://www.youtube.com/watch?v=9QwXrppyvOc

Grout pens will do the trick, they have them at Home Depot, Lowes, and of course Amazon.

Hi Gail, yes you can paint it!

https://www.bhg.com/home-improvement/tile/projects-inspiration/how-to-paint-grout/#:~:text=Using%20a%20foam%20brush%20as,according%20to%20the%20manufacturer's%20recommendations.

https://www.youtube.com/watch?v=4oZVjJUoRr0

You can darken it with grout dye. Here's a link telling how one person did it:

https://simaspaces.com/how-to-dye-grout/

This should be helpful:

https://www.thespruce.com/change-tile-grout-color-apply-colorants-1822577

Mapei Grout Renew is the best product ever. They have 31 colors on their website, but you can find a few colors at Floor and Decor. It is only $10 a bottle and a little goes a long way. It has a sealer in it so the grout will not get mold. I have used it on two bathroom floors and it has lasted years. It is more expensive on Amazon. Home Depot used to sell it. Don't know if they still do.

Hi Gail, the easiest way to do it would be with a grout pen. You can find them in quite a few colors and larger home depots carry them

Hello there Gail,

Paint on an emulsion paint in the colour of your choice, using an Artist Brush. It will be worth it in the end.

Hello -It’s interesting to learn that you can paint grout. Here’s a link from Bob Vila.

https://www.bobvila.com/articles/grout-paint/

Using a foam brush as wide as the grout, work in small sections at a time with small amounts of paint. Apply the grout paint with long strokes. Paint one coat over the whole surface and clean as you go. Let dry completely, according to the manufacturer's recommendations.

You can purchase colored grout at Home Depot.

I painted my off white grout in my bathroom floor to dark gray. I used exterior paint and then sealed it. I'm sure it receives much more wear & tear than a black splash and it has held up great. I did it about 8 months ago.