The Aquarain LED Bath Fountain from Japantrendshop “enhances your bath time like nothing else, adding relaxing LED lighting with 4 colors that mix together to form 7 colors and create endless patterns to light up the dancing fountain.” Product page. Video after the break.
Since Aquarain floats, just place it in your bathwater, turn it on, and let the water come up through the jets. You can use it without the fountain as well to create relaxing mood lighting.
[via Japantrendshop]