Creating New Design Fleur de Lis Back Splash (Part 4)

My new Fleur de Lis Backsplash Mural is almost complete.  However, I realize that I need to make a change and place accents within the four grouted radials.  With only grout, these radials almost disappear into the background.  My plan is to remove the grout from these radials, fill them with hand cut glass accents (the same type I used withing the Fleur de Lis), and re-grout the radials.