If so I've got some on one of our tanks and they look good if you take time to position them well - one (red) is hidden underneath a skull, a blue one is shining down on top and the third is behind the plants - it looks good with the main light off and the led's on at night.
I have heard some people say that the lights inside them don't last long. A few months ago i myself lookied into getting them, however did not find the reviews to be to high for that product.