How to paint the grout between tiles to make it clean looking?

Cheryl...Lowe's has grout paint. I used a damp cloth and toothbrush to do mine.

Get Grout Paint. I did mine and it looks great. Must scrub the grout lines first with grout cleaner. Both purchased at Home Depot.

I used an artist's brush to avoid getting on the tiles. The sealed.

Make sure the grout you want to color is clean. I used a foam brush to apply grout stain. Then make sure to seal it following directions to make it easier to keep clean. I have heard but have not tried, that you can use craft paint as ling as you seal it.

I used a little bottle of acrylic craft paint and a small brush. I sealed it when I was done with grout sealer. It’s been over two years and it still looks great!