just use dark paint it

Sweep and mop your floor thoroughly. Pour a little beige (sand-colored) paint into a rolling tray. Roll your roller into the paint and roll it on the top, shallow part of the tray to blot off some of the paint. Fill one cup with brown glaze and one cup with white glaze. Stipple the floor with the white glaze, also.Roll the entire floor with a 50/50 solution of blue glaze and water. After rolling a small area, brush over it in a sweeping motion with a cloth to mimic the ocean's currents.