We like the sail design. Blue certainly makes sense in this case as sails invoke the sky and water. Entry #23 seems most refined/tight to us among entries 21-23.
Do you mean background color? Sorry for this, it wasn't for purpose. Sails are cut in the circle, so when i'm changing background color, sails are changing too.
We like the gray color of the sails, but want the space outside the circle to be all white; not filled with all gray and no spill of the gray sail color on to the white area.