Jon,
Glad to help. I also did our guest bath countertop....
Before....
After....
On this one I muted the colors a bit by twisting the sponge a bit...that mixed the colors some and gave it a bit of a different look. One thing I would caution on.......Sponging is like fingerprints...no two people sponge alike. Do not have two different people sponge the same color on the same countertop, as it WILL look different. You can do one color, have another person do the next color.......that is fine. But if two folks do the same thing and meet in the middle you may notice the difference. We did not do this, but I could see someone not thinking of this and do it that way. Good luck!!
Frank