These LED clusters are available in blue, green and white. Although designed to mount on the top of trim tabs, that's not why I'm interested in Aqualuma's Trim Tab Lights. Instead, you can mount these lights externally against the transom and position them to shine straight down into the depths. All it takes is a couple of screws and a tube of 3M's 5200 for a quick, cheap and painless addition of a couple of downward-pointing lights. Cost is about $300 per three-light cluster; visit www.aqualuma.com.