1. Avoid White Grout
Most of us associate white grout with mosaics, but white may give your mosaic a sterile feel and will emphasize imperfect cuts. Try using pale colors such as Custom Brand's (click for color chart) Arctic Ice, DeLorean Grey, or Butter Cream. A little pigment in your grout will go a long way in making your mosaics look richer, warmer, and more refined.
Exceptions to this rule may include artwork containing blue and white china, tiles, or other forms of white tesserae.
2. Know What Your Grout Color Can Do for You!
Grout color can unify, break apart, or be neutral within your artwork. You must decide what you want it to do for you before you grout. Let's take a look at the example below:
3. All Grout Is a Color- Make a Plan for It
Including the grout color into your color selection at the beginning of your project can help your grout to "make" your project rather than "break" it! To be sure that your grout color enhances your choice of tesserae, make a small sample board as shown below.
Here, I wanted to include brown into my color palette, but I did not want to make the artwork too dark by using brown tiles. I selected Sable Brown by Custom Brand. The grout gives this piece a warm feeling and provides a beautiful contrast similar to a stained glass window.
I built this sample on a small board that I purchased at a craft store. Be sure to prime the wood before you adhere your tesserae.