ClickSynth use black and gray colors, make the pattern be slow, add a pinch of water ripple effect Adjust ripple frequency

use black and gray colors, make the pattern be slow, add a pinch of water ripple effect Increase contrast

use black and gray colors, make the pattern be slow, add a pinch of water ripple effect Gradient transitions

use black and gray colors, make the pattern be slow, add a pinch of water ripple effect Increase texture depth